57561280140 has 384 divisors, whose sum is σ = 210871664640. Its totient is φ = 11391777792.

The previous prime is 57561280111. The next prime is 57561280157. The reversal of 57561280140 is 4108216575.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10682527 + ... + 10687913.

It is an arithmetic number, because the mean of its divisors is an integer number (549144960).

Almost surely, 2^57561280140 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 57561280140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105435832320).

57561280140 is an abundant number, since it is smaller than the sum of its proper divisors (153310384500).

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

57561280140 is a wasteful number, since it uses less digits than its factorization.

57561280140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5541 (or 5539 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 57561280140 in words is "fifty-seven billion, five hundred sixty-one million, two hundred eighty thousand, one hundred forty".