23506213401665 has 16 divisors (see below), whose sum is σ = 28631425240512. Its totient is φ = 18522382701504.

The previous prime is 23506213401653. The next prime is 23506213401679. The reversal of 23506213401665 is 56610431260532.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23506213401665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383699 + ... + 6867288.

It is an arithmetic number, because the mean of its divisors is an integer number (1789464077532).

Almost surely, 2^{23506213401665} is an apocalyptic number.

It is an amenable number.

23506213401665 is a deficient number, since it is larger than the sum of its proper divisors (5125211838847).

23506213401665 is an equidigital number, since it uses as much as digits as its factorization.

23506213401665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7260736.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 23506213401665 in words is "twenty-three trillion, five hundred six billion, two hundred thirteen million, four hundred one thousand, six hundred sixty-five".