397692573824 has 640 divisors, whose sum is σ = 1087953216000. Its totient is φ = 144240445440.

The previous prime is 397692573799. The next prime is 397692573869. The reversal of 397692573824 is 428375296793.

Its product of digits (137168640) is a multiple of the sum of its prime divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12828792689 + ... + 12828792719.

It is an arithmetic number, because the mean of its divisors is an integer number (1699926900).

Almost surely, 2^397692573824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397692573824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543976608000).

397692573824 is an abundant number, since it is smaller than the sum of its proper divisors (690260642176).

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

397692573824 is an frugal number, since it uses more digits than its factorization.

397692573824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131 (or 72 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 65.

The spelling of 397692573824 in words is "three hundred ninety-seven billion, six hundred ninety-two million, five hundred seventy-three thousand, eight hundred twenty-four".