57266471988 has 384 divisors, whose sum is σ = 171890933760. Its totient is φ = 16465680000.

The previous prime is 57266471981. The next prime is 57266472023. The reversal of 57266471988 is 88917466275.

57266471988 is a `hidden beast` number, since 5 + 72 + 6 + 6 + 471 + 98 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57266471981) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 316389258 + ... + 316389438.

It is an arithmetic number, because the mean of its divisors is an integer number (447632640).

Almost surely, 2^57266471988 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 57266471988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85945466880).

57266471988 is an abundant number, since it is smaller than the sum of its proper divisors (114624461772).

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

57266471988 is a wasteful number, since it uses less digits than its factorization.

57266471988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329 (or 299 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 57266471988 in words is "fifty-seven billion, two hundred sixty-six million, four hundred seventy-one thousand, nine hundred eighty-eight".