8297807400561 has 16 divisors (see below), whose sum is σ = 13194029159424. Its totient is φ = 4535447523024.

The previous prime is 8297807400557. The next prime is 8297807400613. The reversal of 8297807400561 is 1650047087928.

It is not a de Polignac number, because 8297807400561 - 2² = 8297807400557 is a prime.

It is a super-2 number, since 2×8297807400561² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8297807402561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8589862251 + ... + 8589863216.

It is an arithmetic number, because the mean of its divisors is an integer number (824626822464).

Almost surely, 2^{8297807400561} is an apocalyptic number.

It is an amenable number.

8297807400561 is a deficient number, since it is larger than the sum of its proper divisors (4896221758863).

8297807400561 is a wasteful number, since it uses less digits than its factorization.

8297807400561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17179725500.

The product of its (nonzero) digits is 6773760, while the sum is 57.

The spelling of 8297807400561 in words is "eight trillion, two hundred ninety-seven billion, eight hundred seven million, four hundred thousand, five hundred sixty-one".