2104821156816 has 120 divisors (see below), whose sum is σ = 6773388390080. Its totient is φ = 597687994368.

The previous prime is 2104821156803. The next prime is 2104821156829. The reversal of 2104821156816 is 6186511284012.

2104821156816 is a `hidden beast` number, since 2 + 1 + 0 + 4 + 82 + 1 + 1 + 568 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (2104821156803) and next prime (2104821156829).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6240961 + ... + 6569568.

Almost surely, 2^{2104821156816} is an apocalyptic number.

It is an amenable number.

2104821156816 is an abundant number, since it is smaller than the sum of its proper divisors (4668567233264).

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

2104821156816 is a wasteful number, since it uses less digits than its factorization.

2104821156816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12810713 (or 12810704 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The spelling of 2104821156816 in words is "two trillion, one hundred four billion, eight hundred twenty-one million, one hundred fifty-six thousand, eight hundred sixteen".