23011553204520 has 128 divisors (see below), whose sum is σ = 72038308608000. Its totient is φ = 5869439034624.

The previous prime is 23011553204509. The next prime is 23011553204527. The reversal of 23011553204520 is 2540235511032.

It is not an unprimeable number, because it can be changed into a prime (23011553204527) 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 31 ways as a sum of consecutive naturals, for example, 110635581 + ... + 110843379.

It is an arithmetic number, because the mean of its divisors is an integer number (562799286000).

Almost surely, 2^{23011553204520} is an apocalyptic number.

23011553204520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23011553204520 is an abundant number, since it is smaller than the sum of its proper divisors (49026755403480).

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

23011553204520 is a wasteful number, since it uses less digits than its factorization.

23011553204520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247959 (or 247955 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 23011553204520 its reverse (2540235511032), we get a palindrome (25551788715552).

The spelling of 23011553204520 in words is "twenty-three trillion, eleven billion, five hundred fifty-three million, two hundred four thousand, five hundred twenty".