57220535890 has 32 divisors (see below), whose sum is σ = 120892195584. Its totient is φ = 19088239680.

The previous prime is 57220535873. The next prime is 57220535903. The reversal of 57220535890 is 9853502275.

It is a self number, because there is not a number n which added to its sum of digits gives 57220535890.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11043846 + ... + 11049025.

It is an arithmetic number, because the mean of its divisors is an integer number (3777881112).

Almost surely, 2^57220535890 is an apocalyptic number.

57220535890 is an abundant number, since it is smaller than the sum of its proper divisors (63671659694).

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

57220535890 is a wasteful number, since it uses less digits than its factorization.

57220535890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22092922.

The product of its (nonzero) digits is 756000, while the sum is 46.

The spelling of 57220535890 in words is "fifty-seven billion, two hundred twenty million, five hundred thirty-five thousand, eight hundred ninety".