11551065600 has 120 divisors (see below), whose sum is σ = 38158350120. Its totient is φ = 3080273920.

The previous prime is 11551065571. The next prime is 11551065613. The reversal of 11551065600 is 656015511.

It is a tau number, because it is divible by the number of its divisors (120).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 112005 + ... + 188804.

It is an arithmetic number, because the mean of its divisors is an integer number (317986251).

Almost surely, 2^11551065600 is an apocalyptic number.

11551065600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11551065600 is an abundant number, since it is smaller than the sum of its proper divisors (26607284520).

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

11551065600 is an equidigital number, since it uses as much as digits as its factorization.

11551065600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300840 (or 300819 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 11551065600 in words is "eleven billion, five hundred fifty-one million, sixty-five thousand, six hundred".