145504505405541 has 4 divisors (see below), whose sum is σ = 194006007207392. Its totient is φ = 97003003603692.

The previous prime is 145504505405533. The next prime is 145504505405563.

145504505405541 is nontrivially palindromic in base 10.

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 145504505405541 - 2³ = 145504505405533 is a prime.

It is a super-2 number, since 2×145504505405541² (a number of 29 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 (145504505405041) 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, 24250750900921 + ... + 24250750900926.

It is an arithmetic number, because the mean of its divisors is an integer number (48501501801848).

Almost surely, 2^{145504505405541} is an apocalyptic number.

It is an amenable number.

145504505405541 is a deficient number, since it is larger than the sum of its proper divisors (48501501801851).

145504505405541 is an equidigital number, since it uses as much as digits as its factorization.

145504505405541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48501501801850.

The product of its (nonzero) digits is 4000000, while the sum is 48.

It can be divided in two parts, 14550450 and 5405541, that added together give a palindrome (19955991).

The spelling of 145504505405541 in words is "one hundred forty-five trillion, five hundred four billion, five hundred five million, four hundred five thousand, five hundred forty-one".