11551542065504 has 24 divisors (see below), whose sum is σ = 25990969647888. Its totient is φ = 4950660885120.

The previous prime is 11551542065501. The next prime is 11551542065573. The reversal of 11551542065504 is 40556024515511.

It is a super-2 number, since 2×11551542065504² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11551542065501) 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, 25784691887 + ... + 25784692334.

It is an arithmetic number, because the mean of its divisors is an integer number (1082957068662).

Almost surely, 2^{11551542065504} is an apocalyptic number.

11551542065504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11551542065504 is an abundant number, since it is smaller than the sum of its proper divisors (14439427582384).

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

11551542065504 is an equidigital number, since it uses as much as digits as its factorization.

11551542065504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51569384238 (or 51569384230 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 44.

The spelling of 11551542065504 in words is "eleven trillion, five hundred fifty-one billion, five hundred forty-two million, sixty-five thousand, five hundred four".