393680636952 has 16 divisors (see below), whose sum is σ = 984201592440. Its totient is φ = 131226878976.

The previous prime is 393680636941. The next prime is 393680636953. The reversal of 393680636952 is 259636086393.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393680636953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8201679913 + ... + 8201679960.

Almost surely, 2^393680636952 is an apocalyptic number.

It is an amenable number.

393680636952 is an abundant number, since it is smaller than the sum of its proper divisors (590520955488).

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

393680636952 is a wasteful number, since it uses less digits than its factorization.

393680636952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16403359882 (or 16403359878 counting only the distinct ones).

The product of its (nonzero) digits is 37791360, while the sum is 60.

The spelling of 393680636952 in words is "three hundred ninety-three billion, six hundred eighty million, six hundred thirty-six thousand, nine hundred fifty-two".