7808905857057 has 32 divisors (see below), whose sum is σ = 11005676236800. Its totient is φ = 4914957096192.

The previous prime is 7808905857017. The next prime is 7808905857059. The reversal of 7808905857057 is 7507585098087.

It is not a de Polignac number, because 7808905857057 - 2⁷ = 7808905856929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a junction number, because it is equal to n+sod(n) for n = 7808905856982 and 7808905857000.

It is not an unprimeable number, because it can be changed into a prime (7808905857059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16606258 + ... + 17070020.

It is an arithmetic number, because the mean of its divisors is an integer number (343927382400).

Almost surely, 2^{7808905857057} is an apocalyptic number.

It is an amenable number.

7808905857057 is a deficient number, since it is larger than the sum of its proper divisors (3196770379743).

7808905857057 is a wasteful number, since it uses less digits than its factorization.

7808905857057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466957.

The product of its (nonzero) digits is 197568000, while the sum is 69.

The spelling of 7808905857057 in words is "seven trillion, eight hundred eight billion, nine hundred five million, eight hundred fifty-seven thousand, fifty-seven".