531637379479 has 16 divisors (see below), whose sum is σ = 558410890752. Its totient is φ = 505170233568.

The previous prime is 531637379467. The next prime is 531637379503. The reversal of 531637379479 is 974973736135.

It is a cyclic number.

It is not a de Polignac number, because 531637379479 - 2⁵ = 531637379447 is a prime.

It is a super-2 number, since 2×531637379479² (a number of 24 digits) contains 22 as substring.

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 531637379479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531637379879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19135252 + ... + 19163014.

It is an arithmetic number, because the mean of its divisors is an integer number (34900680672).

Almost surely, 2^531637379479 is an apocalyptic number.

531637379479 is a deficient number, since it is larger than the sum of its proper divisors (26773511273).

531637379479 is a wasteful number, since it uses less digits than its factorization.

531637379479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33246.

The product of its digits is 90016920, while the sum is 64.

The spelling of 531637379479 in words is "five hundred thirty-one billion, six hundred thirty-seven million, three hundred seventy-nine thousand, four hundred seventy-nine".