57643996806 has 24 divisors (see below), whose sum is σ = 136249447464. Its totient is φ = 17467877760.

The previous prime is 57643996801. The next prime is 57643996871. The reversal of 57643996806 is 60869934675.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57643996801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145565451 + ... + 145565846.

It is an arithmetic number, because the mean of its divisors is an integer number (5677060311).

Almost surely, 2^57643996806 is an apocalyptic number.

57643996806 is an abundant number, since it is smaller than the sum of its proper divisors (78605450658).

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

57643996806 is a wasteful number, since it uses less digits than its factorization.

57643996806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291131316 (or 291131313 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 57643996806 in words is "fifty-seven billion, six hundred forty-three million, nine hundred ninety-six thousand, eight hundred six".