531404265697 has 24 divisors (see below), whose sum is σ = 586868259840. Its totient is φ = 480521108160.

The previous prime is 531404265683. The next prime is 531404265703. The reversal of 531404265697 is 796562404135.

It is a de Polignac number, because none of the positive numbers 2^k-531404265697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531404265617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491704 + ... + 1142182.

It is an arithmetic number, because the mean of its divisors is an integer number (24452844160).

Almost surely, 2^531404265697 is an apocalyptic number.

It is an amenable number.

531404265697 is a deficient number, since it is larger than the sum of its proper divisors (55463994143).

531404265697 is a wasteful number, since it uses less digits than its factorization.

531404265697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650621 (or 650602 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 52.

The spelling of 531404265697 in words is "five hundred thirty-one billion, four hundred four million, two hundred sixty-five thousand, six hundred ninety-seven".