397118838672 has 240 divisors, whose sum is σ = 1206534026880. Its totient is φ = 126209166336.

The previous prime is 397118838601. The next prime is 397118838691. The reversal of 397118838672 is 276838811793.

397118838672 is a `hidden beast` number, since 3 + 9 + 7 + 1 + 188 + 386 + 72 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28340404 + ... + 28354412.

It is an arithmetic number, because the mean of its divisors is an integer number (5027225112).

Almost surely, 2^397118838672 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 397118838672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603267013440).

397118838672 is an abundant number, since it is smaller than the sum of its proper divisors (809415188208).

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

397118838672 is a wasteful number, since it uses less digits than its factorization.

397118838672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14372 (or 14354 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 397118838672 in words is "three hundred ninety-seven billion, one hundred eighteen million, eight hundred thirty-eight thousand, six hundred seventy-two".