2100177072870 has 64 divisors (see below), whose sum is σ = 5178440168640. Its totient is φ = 544722651648.

The previous prime is 2100177072793. The next prime is 2100177072919. The reversal of 2100177072870 is 782707710012.

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, 2903784 + ... + 3554196.

It is an arithmetic number, because the mean of its divisors is an integer number (80913127635).

Almost surely, 2^{2100177072870} is an apocalyptic number.

2100177072870 is an abundant number, since it is smaller than the sum of its proper divisors (3078263095770).

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

2100177072870 is a wasteful number, since it uses less digits than its factorization.

2100177072870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653369.

The product of its (nonzero) digits is 76832, while the sum is 42.

The spelling of 2100177072870 in words is "two trillion, one hundred billion, one hundred seventy-seven million, seventy-two thousand, eight hundred seventy".