11650655651 has 4 divisors (see below), whose sum is σ = 11657177112. Its totient is φ = 11644134192.

The previous prime is 11650655629. The next prime is 11650655659. The reversal of 11650655651 is 15655605611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15655605611 = 337 ⋅46455803.

It is a cyclic number.

It is not a de Polignac number, because 11650655651 - 2²² = 11646461347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11650655599 and 11650655608.

It is not an unprimeable number, because it can be changed into a prime (11650655659) 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, 3258050 + ... + 3261623.

It is an arithmetic number, because the mean of its divisors is an integer number (2914294278).

Almost surely, 2^11650655651 is an apocalyptic number.

11650655651 is a deficient number, since it is larger than the sum of its proper divisors (6521461).

11650655651 is an equidigital number, since it uses as much as digits as its factorization.

11650655651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6521460.

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 11650655651 in words is "eleven billion, six hundred fifty million, six hundred fifty-five thousand, six hundred fifty-one".