398066972163796 has 24 divisors (see below), whose sum is σ = 750453124526504. Its totient is φ = 183661997184000.

The previous prime is 398066972163781. The next prime is 398066972163857. The reversal of 398066972163796 is 697361279660893.

It can be written as a sum of positive squares in 4 ways, for example, as 3002214636100 + 395064757527696 = 1732690^2 + 19876236^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1275274485 + ... + 1275586588.

Almost surely, 2^{398066972163796} is an apocalyptic number.

It is an amenable number.

398066972163796 is a deficient number, since it is larger than the sum of its proper divisors (352386152362708).

398066972163796 is a wasteful number, since it uses less digits than its factorization.

398066972163796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550864091 (or 2550864089 counting only the distinct ones).

The product of its (nonzero) digits is 6666395904, while the sum is 82.

The spelling of 398066972163796 in words is "three hundred ninety-eight trillion, sixty-six billion, nine hundred seventy-two million, one hundred sixty-three thousand, seven hundred ninety-six".