397199290656 has 384 divisors, whose sum is σ = 1311061248000. Its totient is φ = 102725812224.

The previous prime is 397199290643. The next prime is 397199290711. The reversal of 397199290656 is 656092991793.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35910855 + ... + 35921913.

It is an arithmetic number, because the mean of its divisors is an integer number (3414222000).

Almost surely, 2^397199290656 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 397199290656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (655530624000).

397199290656 is an abundant number, since it is smaller than the sum of its proper divisors (913861957344).

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

397199290656 is a wasteful number, since it uses less digits than its factorization.

397199290656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11224 (or 11216 counting only the distinct ones).

The product of its (nonzero) digits is 49601160, while the sum is 66.

The spelling of 397199290656 in words is "three hundred ninety-seven billion, one hundred ninety-nine million, two hundred ninety thousand, six hundred fifty-six".