857773752464 has 20 divisors (see below), whose sum is σ = 1662189385020. Its totient is φ = 428821653120.

The previous prime is 857773752391. The next prime is 857773752491. The reversal of 857773752464 is 464257377758.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 449462976400 + 408310776064 = 670420^2 + 638992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 857773752464.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3967859 + ... + 4178450.

It is an arithmetic number, because the mean of its divisors is an integer number (83109469251).

Almost surely, 2^857773752464 is an apocalyptic number.

It is an amenable number.

857773752464 is a deficient number, since it is larger than the sum of its proper divisors (804415632556).

857773752464 is a wasteful number, since it uses less digits than its factorization.

857773752464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8152898 (or 8152892 counting only the distinct ones).

The product of its digits is 276595200, while the sum is 65.

The spelling of 857773752464 in words is "eight hundred fifty-seven billion, seven hundred seventy-three million, seven hundred fifty-two thousand, four hundred sixty-four".