57161083980 has 768 divisors, whose sum is σ = 223046369280. Its totient is φ = 10556006400.

The previous prime is 57161083963. The next prime is 57161084023. The reversal of 57161083980 is 8938016175.

It is a super-2 number, since 2×57161083980² (a number of 22 digits) contains 22 as substring.

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 255 ways as a sum of consecutive naturals, for example, 342281857 + ... + 342282023.

It is an arithmetic number, because the mean of its divisors is an integer number (290424960).

Almost surely, 2^57161083980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57161083980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111523184640).

57161083980 is an abundant number, since it is smaller than the sum of its proper divisors (165885285300).

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

57161083980 is a wasteful number, since it uses less digits than its factorization.

57161083980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 57161083980 in words is "fifty-seven billion, one hundred sixty-one million, eighty-three thousand, nine hundred eighty".