2056670221986 has 48 divisors (see below), whose sum is σ = 4490336305728. Its totient is φ = 680308740000.

The previous prime is 2056670221961. The next prime is 2056670222053. The reversal of 2056670221986 is 6891220766502.

2056670221986 is a `hidden beast` number, since 2 + 0 + 566 + 70 + 2 + 2 + 1 + 9 + 8 + 6 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 845611 + ... + 2197361.

It is an arithmetic number, because the mean of its divisors is an integer number (93548673036).

Almost surely, 2^{2056670221986} is an apocalyptic number.

2056670221986 is an abundant number, since it is smaller than the sum of its proper divisors (2433666083742).

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

2056670221986 is a wasteful number, since it uses less digits than its factorization.

2056670221986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352407 (or 1352404 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 2056670221986 in words is "two trillion, fifty-six billion, six hundred seventy million, two hundred twenty-one thousand, nine hundred eighty-six".