57220535806 has 16 divisors (see below), whose sum is σ = 98167430016. Its totient is φ = 24504316056.

The previous prime is 57220535791. The next prime is 57220535843. The reversal of 57220535806 is 60853502275.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1545276 + ... + 1581871.

It is an arithmetic number, because the mean of its divisors is an integer number (6135464376).

Almost surely, 2^57220535806 is an apocalyptic number.

57220535806 is a deficient number, since it is larger than the sum of its proper divisors (40946894210).

57220535806 is a wasteful number, since it uses less digits than its factorization.

57220535806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3128463.

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 57220535806 in words is "fifty-seven billion, two hundred twenty million, five hundred thirty-five thousand, eight hundred six".