57981172650 has 96 divisors (see below), whose sum is σ = 151731895680. Its totient is φ = 14623150080.

The previous prime is 57981172643. The next prime is 57981172681. The reversal of 57981172650 is 5627118975.

It is a junction number, because it is equal to n+sod(n) for n = 57981172593 and 57981172602.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 212634 + ... + 401466.

It is an arithmetic number, because the mean of its divisors is an integer number (1580540580).

Almost surely, 2^57981172650 is an apocalyptic number.

57981172650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 57981172650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75865947840).

57981172650 is an abundant number, since it is smaller than the sum of its proper divisors (93750723030).

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

57981172650 is a wasteful number, since it uses less digits than its factorization.

57981172650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188960 (or 188955 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 51.

The spelling of 57981172650 in words is "fifty-seven billion, nine hundred eighty-one million, one hundred seventy-two thousand, six hundred fifty".