397800481656 has 64 divisors (see below), whose sum is σ = 1022902341120. Its totient is φ = 128845301760.

The previous prime is 397800481651. The next prime is 397800481667. The reversal of 397800481656 is 656184008793.

397800481656 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 397800481596 and 397800481605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397800481651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 799440 + ... + 1197791.

It is an arithmetic number, because the mean of its divisors is an integer number (15982849080).

Almost surely, 2^397800481656 is an apocalyptic number.

It is an amenable number.

397800481656 is an abundant number, since it is smaller than the sum of its proper divisors (625101859464).

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

397800481656 is a wasteful number, since it uses less digits than its factorization.

397800481656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997476 (or 1997472 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 397800481656 in words is "three hundred ninety-seven billion, eight hundred million, four hundred eighty-one thousand, six hundred fifty-six".