5131456625640 has 128 divisors (see below), whose sum is σ = 15600629030400. Its totient is φ = 1350079610880.

The previous prime is 5131456625627. The next prime is 5131456625663. The reversal of 5131456625640 is 465266541315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 5131456625640.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12818920 + ... + 13213160.

It is an arithmetic number, because the mean of its divisors is an integer number (121879914300).

Almost surely, 2^{5131456625640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5131456625640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7800314515200).

5131456625640 is an abundant number, since it is smaller than the sum of its proper divisors (10469172404760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5131456625640 is a wasteful number, since it uses less digits than its factorization.

5131456625640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395707 (or 395703 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 48.

The spelling of 5131456625640 in words is "five trillion, one hundred thirty-one billion, four hundred fifty-six million, six hundred twenty-five thousand, six hundred forty".