11616610651 has 4 divisors (see below), whose sum is σ = 11621705704. Its totient is φ = 11611515600.

The previous prime is 11616610637. The next prime is 11616610657. The reversal of 11616610651 is 15601661611.

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 11616610651 - 2⁵ = 11616610619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11616610657) 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, 2544105 + ... + 2548666.

It is an arithmetic number, because the mean of its divisors is an integer number (2905426426).

Almost surely, 2^11616610651 is an apocalyptic number.

11616610651 is a deficient number, since it is larger than the sum of its proper divisors (5095053).

11616610651 is an equidigital number, since it uses as much as digits as its factorization.

11616610651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5095052.

The product of its (nonzero) digits is 6480, while the sum is 34.

The spelling of 11616610651 in words is "eleven billion, six hundred sixteen million, six hundred ten thousand, six hundred fifty-one".