12163500661 has 8 divisors (see below), whose sum is σ = 13193395040. Its totient is φ = 11147069232.

The previous prime is 12163500649. The next prime is 12163500673. The reversal of 12163500661 is 16600536121.

It is an interprime number because it is at equal distance from previous prime (12163500649) and next prime (12163500673).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12163500661 - 2²⁷ = 12029282933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12163500691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3363855 + ... + 3367468.

It is an arithmetic number, because the mean of its divisors is an integer number (1649174380).

Almost surely, 2^12163500661 is an apocalyptic number.

It is an amenable number.

12163500661 is a deficient number, since it is larger than the sum of its proper divisors (1029894379).

12163500661 is a wasteful number, since it uses less digits than its factorization.

12163500661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6731475.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 12163500661 in words is "twelve billion, one hundred sixty-three million, five hundred thousand, six hundred sixty-one".