397506082176 has 240 divisors, whose sum is σ = 1376111648340. Its totient is φ = 113573021184.

The previous prime is 397506082163. The next prime is 397506082201. The reversal of 397506082176 is 671280605793.

397506082176 is a `hidden beast` number, since 3 + 9 + 7 + 5 + 0 + 608 + 21 + 7 + 6 = 666.

It is a super-2 number, since 2×397506082176² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 116811 + ... + 899253.

Almost surely, 2^397506082176 is an apocalyptic number.

397506082176 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397506082176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688055824170).

397506082176 is an abundant number, since it is smaller than the sum of its proper divisors (978605566164).

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

397506082176 is an equidigital number, since it uses as much as digits as its factorization.

397506082176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782483 (or 782455 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The spelling of 397506082176 in words is "three hundred ninety-seven billion, five hundred six million, eighty-two thousand, one hundred seventy-six".