7129874538831 has 64 divisors (see below), whose sum is σ = 10769415192576. Its totient is φ = 4158341193600.

The previous prime is 7129874538769. The next prime is 7129874538847. The reversal of 7129874538831 is 1388354789217.

It is not a de Polignac number, because 7129874538831 - 2²⁶ = 7129807429967 is a prime.

It is a super-2 number, since 2×7129874538831² (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 (7129874538881) 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, 56155686 + ... + 56282508.

It is an arithmetic number, because the mean of its divisors is an integer number (168272112384).

Almost surely, 2^{7129874538831} is an apocalyptic number.

7129874538831 is a deficient number, since it is larger than the sum of its proper divisors (3639540653745).

7129874538831 is a wasteful number, since it uses less digits than its factorization.

7129874538831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127492.

The product of its digits is 81285120, while the sum is 66.

The spelling of 7129874538831 in words is "seven trillion, one hundred twenty-nine billion, eight hundred seventy-four million, five hundred thirty-eight thousand, eight hundred thirty-one".