57940378878466 has 48 divisors (see below), whose sum is σ = 101133003015360. Its totient is φ = 24387859501920.

The previous prime is 57940378878463. The next prime is 57940378878467. The reversal of 57940378878466 is 66487887304975.

It is a self number, because there is not a number n which added to its sum of digits gives 57940378878466.

It is not an unprimeable number, because it can be changed into a prime (57940378878463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51540561 + ... + 52652731.

It is an arithmetic number, because the mean of its divisors is an integer number (2106937562820).

Almost surely, 2^{57940378878466} is an apocalyptic number.

57940378878466 is a deficient number, since it is larger than the sum of its proper divisors (43192624136894).

57940378878466 is a wasteful number, since it uses less digits than its factorization.

57940378878466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113367 (or 1113308 counting only the distinct ones).

The product of its (nonzero) digits is 13655900160, while the sum is 82.

The spelling of 57940378878466 in words is "fifty-seven trillion, nine hundred forty billion, three hundred seventy-eight million, eight hundred seventy-eight thousand, four hundred sixty-six".