397632375340 has 24 divisors (see below), whose sum is σ = 840632209200. Its totient is φ = 157985479488.

The previous prime is 397632375337. The next prime is 397632375341. The reversal of 397632375340 is 43573236793.

It is a super-2 number, since 2×397632375340² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (397632375341) 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, 66713862 + ... + 66719821.

It is an arithmetic number, because the mean of its divisors is an integer number (35026342050).

Almost surely, 2^397632375340 is an apocalyptic number.

It is an amenable number.

397632375340 is an abundant number, since it is smaller than the sum of its proper divisors (442999833860).

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

397632375340 is a wasteful number, since it uses less digits than its factorization.

397632375340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133433841 (or 133433839 counting only the distinct ones).

The product of its (nonzero) digits is 8573040, while the sum is 52.

The spelling of 397632375340 in words is "three hundred ninety-seven billion, six hundred thirty-two million, three hundred seventy-five thousand, three hundred forty".