397381260211776 has 189 divisors, whose sum is σ = 1182808512413931. Its totient is φ = 132456114235008.

The previous prime is 397381260211769. The next prime is 397381260211799. The reversal of 397381260211776 is 677112062183793.

The square root of 397381260211776 is 19934424.

It is a perfect power (a square), and thus also a powerful number.

397381260211776 is a `hidden beast` number, since 3 + 9 + 7 + 3 + 8 + 1 + 2 + 602 + 1 + 17 + 7 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 12917491371 + ... + 12917522133.

Almost surely, 2^{397381260211776} is an apocalyptic number.

397381260211776 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

397381260211776 is the 19934424-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 397381260211776

397381260211776 is an abundant number, since it is smaller than the sum of its proper divisors (785427252202155).

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

397381260211776 is an frugal number, since it uses more digits than its factorization.

397381260211776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61562 (or 30768 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 63.

The spelling of 397381260211776 in words is "three hundred ninety-seven trillion, three hundred eighty-one billion, two hundred sixty million, two hundred eleven thousand, seven hundred seventy-six".