531534340253491 has 12 divisors (see below), whose sum is σ = 563497841589312. Its totient is φ = 501300737156304.

The previous prime is 531534340253467. The next prime is 531534340253509. The reversal of 531534340253491 is 194352043435135.

It is not a de Polignac number, because 531534340253491 - 2¹¹ = 531534340251443 is a prime.

It is a super-2 number, since 2×531534340253491² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531534340251491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3301251996 + ... + 3301413001.

It is an arithmetic number, because the mean of its divisors is an integer number (46958153465776).

Almost surely, 2^{531534340253491} is an apocalyptic number.

531534340253491 is a deficient number, since it is larger than the sum of its proper divisors (31963501335821).

531534340253491 is a wasteful number, since it uses less digits than its factorization.

531534340253491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6602665258 (or 6602665239 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 52.

The spelling of 531534340253491 in words is "five hundred thirty-one trillion, five hundred thirty-four billion, three hundred forty million, two hundred fifty-three thousand, four hundred ninety-one".