2117908452980 has 48 divisors (see below), whose sum is σ = 4461895126080. Its totient is φ = 844443798528.

The previous prime is 2117908452937. The next prime is 2117908453039. The reversal of 2117908452980 is 892548097112.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19056011 + ... + 19166829.

It is an arithmetic number, because the mean of its divisors is an integer number (92956148460).

Almost surely, 2^{2117908452980} is an apocalyptic number.

2117908452980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2117908452980 is an abundant number, since it is smaller than the sum of its proper divisors (2343986673100).

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

2117908452980 is a wasteful number, since it uses less digits than its factorization.

2117908452980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113888 (or 113886 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 56.

The spelling of 2117908452980 in words is "two trillion, one hundred seventeen billion, nine hundred eight million, four hundred fifty-two thousand, nine hundred eighty".