531240191763903 has 96 divisors (see below), whose sum is σ = 816926372121600. Its totient is φ = 331728421248000.

The previous prime is 531240191763871. The next prime is 531240191763923. The reversal of 531240191763903 is 309367191042135.

531240191763903 is a `hidden beast` number, since 5 + 3 + 1 + 2 + 401 + 91 + 7 + 63 + 90 + 3 = 666.

It is not a de Polignac number, because 531240191763903 - 2⁵ = 531240191763871 is a prime.

It is a super-2 number, since 2×531240191763903² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 531240191763903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531240191763923) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3930648378 + ... + 3930783528.

It is an arithmetic number, because the mean of its divisors is an integer number (8509649709600).

Almost surely, 2^{531240191763903} is an apocalyptic number.

531240191763903 is a deficient number, since it is larger than the sum of its proper divisors (285686180357697).

531240191763903 is a wasteful number, since it uses less digits than its factorization.

531240191763903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136093 (or 136090 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 531240191763903 in words is "five hundred thirty-one trillion, two hundred forty billion, one hundred ninety-one million, seven hundred sixty-three thousand, nine hundred three".