12749345274631 has 64 divisors (see below), whose sum is σ = 16716772638720. Its totient is φ = 9461448622080.

The previous prime is 12749345274629. The next prime is 12749345274643. The reversal of 12749345274631 is 13647254394721.

It is not a de Polignac number, because 12749345274631 - 2¹ = 12749345274629 is a prime.

It is a super-2 number, since 2×12749345274631² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749345274671) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11075386 + ... + 12172216.

It is an arithmetic number, because the mean of its divisors is an integer number (261199572480).

Almost surely, 2^{12749345274631} is an apocalyptic number.

12749345274631 is a deficient number, since it is larger than the sum of its proper divisors (3967427364089).

12749345274631 is a wasteful number, since it uses less digits than its factorization.

12749345274631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097024.

The product of its digits is 30481920, while the sum is 58.

The spelling of 12749345274631 in words is "twelve trillion, seven hundred forty-nine billion, three hundred forty-five million, two hundred seventy-four thousand, six hundred thirty-one".