57881509416 has 72 divisors (see below), whose sum is σ = 162783622170. Its totient is φ = 19293818976.

The previous prime is 57881509381. The next prime is 57881509423. The reversal of 57881509416 is 61490518875.

It is a happy number.

57881509416 is a `hidden beast` number, since 5 + 78 + 8 + 150 + 9 + 416 = 666.

It can be written as a sum of positive squares in only one way, i.e., 57873924900 + 7584516 = 240570^2 + 2754^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×57881509416² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 498891 + ... + 603866.

Almost surely, 2^57881509416 is an apocalyptic number.

It is an amenable number.

57881509416 is an abundant number, since it is smaller than the sum of its proper divisors (104902112754).

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

57881509416 is an equidigital number, since it uses as much as digits as its factorization.

57881509416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102787 (or 1102762 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 57881509416 in words is "fifty-seven billion, eight hundred eighty-one million, five hundred nine thousand, four hundred sixteen".