397137549817801 has 64 divisors (see below), whose sum is σ = 459857470786560. Its totient is φ = 340382090280960.

The previous prime is 397137549817787. The next prime is 397137549817823. The reversal of 397137549817801 is 108718945731793.

It is not a de Polignac number, because 397137549817801 - 2²⁷ = 397137415600073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397137549817201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 261233641 + ... + 262749481.

It is an arithmetic number, because the mean of its divisors is an integer number (7185272981040).

Almost surely, 2^{397137549817801} is an apocalyptic number.

It is an amenable number.

397137549817801 is a deficient number, since it is larger than the sum of its proper divisors (62719920968759).

397137549817801 is a wasteful number, since it uses less digits than its factorization.

397137549817801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516226.

The product of its (nonzero) digits is 320060160, while the sum is 73.

The spelling of 397137549817801 in words is "three hundred ninety-seven trillion, one hundred thirty-seven billion, five hundred forty-nine million, eight hundred seventeen thousand, eight hundred one".