397767885616 has 40 divisors (see below), whose sum is σ = 774481099184. Its totient is φ = 197902172160.

The previous prime is 397767885611. The next prime is 397767885629. The reversal of 397767885616 is 616588767793.

It is not an unprimeable number, because it can be changed into a prime (397767885611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24950800 + ... + 24966736.

Almost surely, 2^397767885616 is an apocalyptic number.

It is an amenable number.

397767885616 is a deficient number, since it is larger than the sum of its proper divisors (376713213568).

397767885616 is a wasteful number, since it uses less digits than its factorization.

397767885616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23549 (or 23543 counting only the distinct ones).

The product of its digits is 640120320, while the sum is 73.

The spelling of 397767885616 in words is "three hundred ninety-seven billion, seven hundred sixty-seven million, eight hundred eighty-five thousand, six hundred sixteen".