2100978480280 has 32 divisors (see below), whose sum is σ = 4764423651840. Its totient is φ = 833774135040.

The previous prime is 2100978480233. The next prime is 2100978480311. The reversal of 2100978480280 is 820848790012.

It is a super-2 number, since 2×2100978480280² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206784141 + ... + 206794300.

It is an arithmetic number, because the mean of its divisors is an integer number (148888239120).

Almost surely, 2^{2100978480280} is an apocalyptic number.

2100978480280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100978480280 is an abundant number, since it is smaller than the sum of its proper divisors (2663445171560).

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

2100978480280 is a wasteful number, since it uses less digits than its factorization.

2100978480280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413578579 (or 413578575 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 49.

The spelling of 2100978480280 in words is "two trillion, one hundred billion, nine hundred seventy-eight million, four hundred eighty thousand, two hundred eighty".