2100996456860 has 48 divisors (see below), whose sum is σ = 5067730214400. Its totient is φ = 716721825600.

The previous prime is 2100996456833. The next prime is 2100996456863. The reversal of 2100996456860 is 686546990012.

It is a super-2 number, since 2×2100996456860² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2100996456796 and 2100996456805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100996456863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37678466 + ... + 37734185.

It is an arithmetic number, because the mean of its divisors is an integer number (105577712800).

Almost surely, 2^{2100996456860} is an apocalyptic number.

2100996456860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100996456860 is an abundant number, since it is smaller than the sum of its proper divisors (2966733757540).

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

2100996456860 is a wasteful number, since it uses less digits than its factorization.

2100996456860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75412866 (or 75412864 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 2100996456860 in words is "two trillion, one hundred billion, nine hundred ninety-six million, four hundred fifty-six thousand, eight hundred sixty".