2115894949600 has 72 divisors (see below), whose sum is σ = 5469277318848. Its totient is φ = 796572211200.

The previous prime is 2115894949591. The next prime is 2115894949601. The reversal of 2115894949600 is 69494985112.

It is a super-2 number, since 2×2115894949600² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115894949601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77776656 + ... + 77803855.

It is an arithmetic number, because the mean of its divisors is an integer number (75962184984).

Almost surely, 2^{2115894949600} is an apocalyptic number.

2115894949600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2115894949600 is an abundant number, since it is smaller than the sum of its proper divisors (3353382369248).

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

2115894949600 is a wasteful number, since it uses less digits than its factorization.

2115894949600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155580548 (or 155580535 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 58.

The spelling of 2115894949600 in words is "two trillion, one hundred fifteen billion, eight hundred ninety-four million, nine hundred forty-nine thousand, six hundred".