57205777772 has 48 divisors (see below), whose sum is σ = 118933466400. Its totient is φ = 23732712960.

The previous prime is 57205777763. The next prime is 57205777777. The reversal of 57205777772 is 27777750275.

It is not an unprimeable number, because it can be changed into a prime (57205777777) 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, 510947 + ... + 612762.

It is an arithmetic number, because the mean of its divisors is an integer number (2477780550).

Almost surely, 2^57205777772 is an apocalyptic number.

57205777772 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

57205777772 is an abundant number, since it is smaller than the sum of its proper divisors (61727688628).

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

57205777772 is a wasteful number, since it uses less digits than its factorization.

57205777772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123826 (or 1123824 counting only the distinct ones).

The product of its (nonzero) digits is 11764900, while the sum is 56.

The spelling of 57205777772 in words is "fifty-seven billion, two hundred five million, seven hundred seventy-seven thousand, seven hundred seventy-two".