402517356872 has 32 divisors (see below), whose sum is σ = 755800657920. Its totient is φ = 200970714240.

The previous prime is 402517356863. The next prime is 402517356907. The reversal of 402517356872 is 278653715204.

It is a self number, because there is not a number n which added to its sum of digits gives 402517356872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18515273 + ... + 18536999.

It is an arithmetic number, because the mean of its divisors is an integer number (23618770560).

Almost surely, 2^402517356872 is an apocalyptic number.

It is an amenable number.

402517356872 is a deficient number, since it is larger than the sum of its proper divisors (353283301048).

402517356872 is a wasteful number, since it uses less digits than its factorization.

402517356872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24941 (or 24937 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

The spelling of 402517356872 in words is "four hundred two billion, five hundred seventeen million, three hundred fifty-six thousand, eight hundred seventy-two".