57212126280 has 64 divisors (see below), whose sum is σ = 190707091200. Its totient is φ = 15256566720.

The previous prime is 57212126269. The next prime is 57212126287. The reversal of 57212126280 is 8262121275.

It is a happy number.

57212126280 is a `hidden beast` number, since 5 + 7 + 2 + 1 + 21 + 2 + 628 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (57212126287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26486016 + ... + 26488175.

It is an arithmetic number, because the mean of its divisors is an integer number (2979798300).

Almost surely, 2^57212126280 is an apocalyptic number.

It is an amenable number.

57212126280 is an abundant number, since it is smaller than the sum of its proper divisors (133494964920).

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

57212126280 is a wasteful number, since it uses less digits than its factorization.

57212126280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52974211 (or 52974201 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 57212126280 in words is "fifty-seven billion, two hundred twelve million, one hundred twenty-six thousand, two hundred eighty".