2099056213656 has 128 divisors (see below), whose sum is σ = 6287289120000. Its totient is φ = 646692491520.

The previous prime is 2099056213649. The next prime is 2099056213687. The reversal of 2099056213656 is 6563126509902.

It is a happy number.

2099056213656 is a `hidden beast` number, since 2 + 0 + 9 + 9 + 0 + 5 + 621 + 3 + 6 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6069126 + ... + 6405653.

It is an arithmetic number, because the mean of its divisors is an integer number (49119446250).

Almost surely, 2^{2099056213656} is an apocalyptic number.

It is an amenable number.

2099056213656 is an abundant number, since it is smaller than the sum of its proper divisors (4188232906344).

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

2099056213656 is a wasteful number, since it uses less digits than its factorization.

2099056213656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12474854 (or 12474844 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 54.

The spelling of 2099056213656 in words is "two trillion, ninety-nine billion, fifty-six million, two hundred thirteen thousand, six hundred fifty-six".