397236145856 has 28 divisors (see below), whose sum is σ = 859925976360. Its totient is φ = 180561884160.

The previous prime is 397236145843. The next prime is 397236145879. The reversal of 397236145856 is 658541632793.

It is a junction number, because it is equal to n+sod(n) for n = 397236145795 and 397236145804.

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, 282127241 + ... + 282128648.

Almost surely, 2^397236145856 is an apocalyptic number.

It is an amenable number.

397236145856 is an abundant number, since it is smaller than the sum of its proper divisors (462689830504).

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

397236145856 is a wasteful number, since it uses less digits than its factorization.

397236145856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564255912 (or 564255902 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 59.

The spelling of 397236145856 in words is "three hundred ninety-seven billion, two hundred thirty-six million, one hundred forty-five thousand, eight hundred fifty-six".