396053981568 has 768 divisors, whose sum is σ = 1399802826240. Its totient is φ = 109107855360.

The previous prime is 396053981551. The next prime is 396053981579. The reversal of 396053981568 is 865189350693.

396053981568 is a `hidden beast` number, since 3 + 9 + 60 + 5 + 3 + 9 + 8 + 1 + 568 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1699802380 + ... + 1699802612.

It is an arithmetic number, because the mean of its divisors is an integer number (1822659930).

Almost surely, 2^396053981568 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 396053981568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699901413120).

396053981568 is an abundant number, since it is smaller than the sum of its proper divisors (1003748844672).

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

396053981568 is a wasteful number, since it uses less digits than its factorization.

396053981568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 63.

The spelling of 396053981568 in words is "three hundred ninety-six billion, fifty-three million, nine hundred eighty-one thousand, five hundred sixty-eight".