397994611593488 has 120 divisors (see below), whose sum is σ = 969576271896960. Its totient is φ = 156867426213120.

The previous prime is 397994611593437. The next prime is 397994611593521. The reversal of 397994611593488 is 884395116499793.

It is a super-2 number, since 2×397994611593488² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69285398 + ... + 74809461.

It is an arithmetic number, because the mean of its divisors is an integer number (8079802265808).

Almost surely, 2^{397994611593488} is an apocalyptic number.

It is an amenable number.

397994611593488 is an abundant number, since it is smaller than the sum of its proper divisors (571581660303472).

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

397994611593488 is a wasteful number, since it uses less digits than its factorization.

397994611593488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144095165 (or 144095152 counting only the distinct ones).

The product of its digits is 12697896960, while the sum is 86.

The spelling of 397994611593488 in words is "three hundred ninety-seven trillion, nine hundred ninety-four billion, six hundred eleven million, five hundred ninety-three thousand, four hundred eighty-eight".