57206772140 has 96 divisors (see below), whose sum is σ = 139553756160. Its totient is φ = 19292131584.

The previous prime is 57206772083. The next prime is 57206772143. The reversal of 57206772140 is 4127760275.

It is a super-2 number, since 2×57206772140² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (57206772143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6815066 + ... + 6823454.

It is an arithmetic number, because the mean of its divisors is an integer number (1453684960).

Almost surely, 2^57206772140 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 57206772140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69776878080).

57206772140 is an abundant number, since it is smaller than the sum of its proper divisors (82346984020).

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

57206772140 is a wasteful number, since it uses less digits than its factorization.

57206772140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9199 (or 9197 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 57206772140 in words is "fifty-seven billion, two hundred six million, seven hundred seventy-two thousand, one hundred forty".