57878784250 has 64 divisors (see below), whose sum is σ = 125319737088. Its totient is φ = 19605019200.

The previous prime is 57878784247. The next prime is 57878784251. The reversal of 57878784250 is 5248787875.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (57878784251) 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, 53989 + ... + 344488.

It is an arithmetic number, because the mean of its divisors is an integer number (1958120892).

Almost surely, 2^57878784250 is an apocalyptic number.

57878784250 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

57878784250 is an abundant number, since it is smaller than the sum of its proper divisors (67440952838).

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

57878784250 is a wasteful number, since it uses less digits than its factorization.

57878784250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398584 (or 398574 counting only the distinct ones).

The product of its (nonzero) digits is 35123200, while the sum is 61.

The spelling of 57878784250 in words is "fifty-seven billion, eight hundred seventy-eight million, seven hundred eighty-four thousand, two hundred fifty".