12765836836 has 6 divisors (see below), whose sum is σ = 22340214470. Its totient is φ = 6382918416.

The previous prime is 12765836827. The next prime is 12765836857. The reversal of 12765836836 is 63863856721.

It can be written as a sum of positive squares in only one way, i.e., 7465996836 + 5299840000 = 86406^2 + 72800^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1595729601 + ... + 1595729608.

Almost surely, 2^12765836836 is an apocalyptic number.

It is an amenable number.

12765836836 is a deficient number, since it is larger than the sum of its proper divisors (9574377634).

12765836836 is a wasteful number, since it uses less digits than its factorization.

12765836836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191459213 (or 3191459211 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 55.

The spelling of 12765836836 in words is "twelve billion, seven hundred sixty-five million, eight hundred thirty-six thousand, eight hundred thirty-six".