390645551652 has 24 divisors (see below), whose sum is σ = 912146879616. Its totient is φ = 130123670688.

The previous prime is 390645551609. The next prime is 390645551693. The reversal of 390645551652 is 256155546093.

It is a junction number, because it is equal to n+sod(n) for n = 390645551595 and 390645551604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11421363 + ... + 11455514.

It is an arithmetic number, because the mean of its divisors is an integer number (38006119984).

Almost surely, 2^390645551652 is an apocalyptic number.

It is an amenable number.

390645551652 is an abundant number, since it is smaller than the sum of its proper divisors (521501327964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390645551652 is a wasteful number, since it uses less digits than its factorization.

390645551652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22878307 (or 22878305 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 51.

The spelling of 390645551652 in words is "three hundred ninety billion, six hundred forty-five million, five hundred fifty-one thousand, six hundred fifty-two".