23145211124520 has 32 divisors (see below), whose sum is σ = 69435633373920. Its totient is φ = 6172056299840.

The previous prime is 23145211124513. The next prime is 23145211124527. The reversal of 23145211124520 is 2542111254132.

It is an interprime number because it is at equal distance from previous prime (23145211124513) and next prime (23145211124527).

It is not an unprimeable number, because it can be changed into a prime (23145211124527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96438379566 + ... + 96438379805.

It is an arithmetic number, because the mean of its divisors is an integer number (2169863542935).

Almost surely, 2^{23145211124520} is an apocalyptic number.

23145211124520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23145211124520 is an abundant number, since it is smaller than the sum of its proper divisors (46290422249400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23145211124520 is a wasteful number, since it uses less digits than its factorization.

23145211124520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192876759385 (or 192876759381 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

Adding to 23145211124520 its reverse (2542111254132), we get a palindrome (25687322378652).

The spelling of 23145211124520 in words is "twenty-three trillion, one hundred forty-five billion, two hundred eleven million, one hundred twenty-four thousand, five hundred twenty".