57956380878 has 16 divisors (see below), whose sum is σ = 126450285696. Its totient is φ = 17562539640.

The previous prime is 57956380877. The next prime is 57956380879. The reversal of 57956380878 is 87808365975.

It is an interprime number because it is at equal distance from previous prime (57956380877) and next prime (57956380879).

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 878126983 = 57956380878 / (5 + 7 + 9 + 5 + 6 + 3 + 8 + 0 + 8 + 7 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57956380871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439063426 + ... + 439063557.

It is an arithmetic number, because the mean of its divisors is an integer number (7903142856).

Almost surely, 2^57956380878 is an apocalyptic number.

57956380878 is an abundant number, since it is smaller than the sum of its proper divisors (68493904818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57956380878 is a wasteful number, since it uses less digits than its factorization.

57956380878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878126999.

The product of its (nonzero) digits is 101606400, while the sum is 66.

It can be divided in two parts, 57956 and 380878, that added together give a palindrome (438834).

The spelling of 57956380878 in words is "fifty-seven billion, nine hundred fifty-six million, three hundred eighty thousand, eight hundred seventy-eight".