11116665651 has 64 divisors (see below), whose sum is σ = 18784145408. Its totient is φ = 5690539008.

The previous prime is 11116665641. The next prime is 11116665683. The reversal of 11116665651 is 15656661111.

It is not a de Polignac number, because 11116665651 - 2²⁷ = 10982447923 is a prime.

It is a super-2 number, since 2×11116665651² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (11116665641) 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 63 ways as a sum of consecutive naturals, for example, 4675575 + ... + 4677951.

It is an arithmetic number, because the mean of its divisors is an integer number (293502272).

Almost surely, 2^11116665651 is an apocalyptic number.

11116665651 is a deficient number, since it is larger than the sum of its proper divisors (7667479757).

11116665651 is a wasteful number, since it uses less digits than its factorization.

11116665651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2900.

The product of its digits is 32400, while the sum is 39.

The spelling of 11116665651 in words is "eleven billion, one hundred sixteen million, six hundred sixty-five thousand, six hundred fifty-one".