11500055651 has 4 divisors (see below), whose sum is σ = 13142920752. Its totient is φ = 9857190552.

The previous prime is 11500055617. The next prime is 11500055687. The reversal of 11500055651 is 15655000511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11500055651 - 2⁶ = 11500055587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11500055351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821432540 + ... + 821432553.

It is an arithmetic number, because the mean of its divisors is an integer number (3285730188).

Almost surely, 2^11500055651 is an apocalyptic number.

11500055651 is a deficient number, since it is larger than the sum of its proper divisors (1642865101).

11500055651 is an equidigital number, since it uses as much as digits as its factorization.

11500055651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642865100.

The product of its (nonzero) digits is 3750, while the sum is 29.

The spelling of 11500055651 in words is "eleven billion, five hundred million, fifty-five thousand, six hundred fifty-one".