12655811377839 has 32 divisors (see below), whose sum is σ = 19993702302720. Its totient is φ = 6967237439232.

The previous prime is 12655811377771. The next prime is 12655811377843. The reversal of 12655811377839 is 93877311855621.

It is not a de Polignac number, because 12655811377839 - 2¹³ = 12655811369647 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12655811377839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12655811377879) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22458339 + ... + 23014964.

It is an arithmetic number, because the mean of its divisors is an integer number (624803196960).

Almost surely, 2^{12655811377839} is an apocalyptic number.

12655811377839 is a deficient number, since it is larger than the sum of its proper divisors (7337890924881).

12655811377839 is a wasteful number, since it uses less digits than its factorization.

12655811377839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45473799.

The product of its digits is 76204800, while the sum is 66.

The spelling of 12655811377839 in words is "twelve trillion, six hundred fifty-five billion, eight hundred eleven million, three hundred seventy-seven thousand, eight hundred thirty-nine".