531497794135 has 64 divisors (see below), whose sum is σ = 847403679744. Its totient is φ = 310174761600.

The previous prime is 531497794067. The next prime is 531497794187.

It is a happy number.

531497794135 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 531497794135 - 2²⁵ = 531464239703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531497794135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 222351 + ... + 1054720.

It is an arithmetic number, because the mean of its divisors is an integer number (13240682496).

Almost surely, 2^531497794135 is an apocalyptic number.

531497794135 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

531497794135 is a deficient number, since it is larger than the sum of its proper divisors (315905885609).

531497794135 is a wasteful number, since it uses less digits than its factorization.

531497794135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277164.

The product of its digits is 14288400, while the sum is 58.

The spelling of 531497794135 in words is "five hundred thirty-one billion, four hundred ninety-seven million, seven hundred ninety-four thousand, one hundred thirty-five".