40402317524 has 12 divisors (see below), whose sum is σ = 70710141684. Its totient is φ = 20199419904.

The previous prime is 40402317493. The next prime is 40402317563. The reversal of 40402317524 is 42571320404.

It can be written as a sum of positive squares in 2 ways, for example, as 34738249924 + 5664067600 = 186382^2 + 75260^2 .

It is a super-2 number, since 2×40402317524² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381719 + ... + 475934.

It is an arithmetic number, because the mean of its divisors is an integer number (5892511807).

Almost surely, 2^40402317524 is an apocalyptic number.

It is an amenable number.

40402317524 is a deficient number, since it is larger than the sum of its proper divisors (30307824160).

40402317524 is a wasteful number, since it uses less digits than its factorization.

40402317524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869434 (or 869432 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

Adding to 40402317524 its reverse (42571320404), we get a palindrome (82973637928).

The spelling of 40402317524 in words is "forty billion, four hundred two million, three hundred seventeen thousand, five hundred twenty-four".