145583734181 has 4 divisors (see below), whose sum is σ = 153246036000. Its totient is φ = 137921432364.

The previous prime is 145583734171. The next prime is 145583734187. The reversal of 145583734181 is 181437385541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 145583734181 - 2⁶ = 145583734117 is a prime.

It is a super-2 number, since 2×145583734181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145583734187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3831150881 + ... + 3831150918.

It is an arithmetic number, because the mean of its divisors is an integer number (38311509000).

Almost surely, 2^145583734181 is an apocalyptic number.

It is an amenable number.

145583734181 is a deficient number, since it is larger than the sum of its proper divisors (7662301819).

145583734181 is an equidigital number, since it uses as much as digits as its factorization.

145583734181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7662301818.

The product of its digits is 1612800, while the sum is 50.

The spelling of 145583734181 in words is "one hundred forty-five billion, five hundred eighty-three million, seven hundred thirty-four thousand, one hundred eighty-one".