2057331806406 has 24 divisors (see below), whose sum is σ = 4465469768760. Its totient is φ = 684559188576.

The previous prime is 2057331806401. The next prime is 2057331806503. The reversal of 2057331806406 is 6046081337502.

2057331806406 is a `hidden beast` number, since 2 + 0 + 573 + 3 + 18 + 0 + 64 + 0 + 6 = 666.

It is a super-2 number, since 2×2057331806406² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057331806401) 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, 101496271 + ... + 101516538.

It is an arithmetic number, because the mean of its divisors is an integer number (186061240365).

Almost surely, 2^{2057331806406} is an apocalyptic number.

2057331806406 is an abundant number, since it is smaller than the sum of its proper divisors (2408137962354).

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

2057331806406 is a wasteful number, since it uses less digits than its factorization.

2057331806406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203013380 (or 203013377 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 2057331806406 in words is "two trillion, fifty-seven billion, three hundred thirty-one million, eight hundred six thousand, four hundred six".