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145331442541 = 149975378809
BaseRepresentation
bin1000011101011001101…
…1011101001101101101
3111220010101202020000001
42013112123131031231
54340114322130131
6150433033104301
713333306610365
oct2072633351555
9456111666001
10145331442541
11566a88a08aa
12241bb258091
13109212aa11c
1470697299a5
153ba8ce8261
hex21d66dd36d

145331442541 has 4 divisors (see below), whose sum is σ = 146306821500. Its totient is φ = 144356063584.

The previous prime is 145331442523. The next prime is 145331442587. The reversal of 145331442541 is 145244133541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145244133541 = 1311172625657.

It can be written as a sum of positive squares in 2 ways, for example, as 29370761641 + 115960680900 = 171379^2 + 340530^2 .

It is a cyclic number.

It is not a de Polignac number, because 145331442541 - 227 = 145197224813 is a prime.

It is a super-2 number, since 2×1453314425412 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145331442541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145331445541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487689256 + ... + 487689553.

It is an arithmetic number, because the mean of its divisors is an integer number (36576705375).

Almost surely, 2145331442541 is an apocalyptic number.

It is an amenable number.

145331442541 is a deficient number, since it is larger than the sum of its proper divisors (975378959).

145331442541 is an equidigital number, since it uses as much as digits as its factorization.

145331442541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975378958.

The product of its digits is 115200, while the sum is 37.

The spelling of 145331442541 in words is "one hundred forty-five billion, three hundred thirty-one million, four hundred forty-two thousand, five hundred forty-one".

Divisors: 1 149 975378809 145331442541