8105977973457 has 48 divisors (see below), whose sum is σ = 14412369811840. Its totient is φ = 4275163742976.

The previous prime is 8105977973441. The next prime is 8105977973477. The reversal of 8105977973457 is 7543797795018.

8105977973457 is a `hidden beast` number, since 8 + 10 + 5 + 9 + 77 + 97 + 3 + 457 = 666.

It is not a de Polignac number, because 8105977973457 - 2⁴ = 8105977973441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8105977973417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6227298 + ... + 7415604.

Almost surely, 2^{8105977973457} is an apocalyptic number.

It is an amenable number.

8105977973457 is a deficient number, since it is larger than the sum of its proper divisors (6306391838383).

8105977973457 is a wasteful number, since it uses less digits than its factorization.

8105977973457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196662 (or 1196659 counting only the distinct ones).

The product of its (nonzero) digits is 466754400, while the sum is 72.

The spelling of 8105977973457 in words is "eight trillion, one hundred five billion, nine hundred seventy-seven million, nine hundred seventy-three thousand, four hundred fifty-seven".