21104255577176 has 16 divisors (see below), whose sum is σ = 40412404297440. Its totient is φ = 10327614431200.

The previous prime is 21104255577133. The next prime is 21104255577191. The reversal of 21104255577176 is 67177555240112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28064169275 + ... + 28064170026.

It is an arithmetic number, because the mean of its divisors is an integer number (2525775268590).

Almost surely, 2^{21104255577176} is an apocalyptic number.

It is an amenable number.

21104255577176 is a deficient number, since it is larger than the sum of its proper divisors (19308148720264).

21104255577176 is a wasteful number, since it uses less digits than its factorization.

21104255577176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56128339354 (or 56128339350 counting only the distinct ones).

The product of its (nonzero) digits is 4116000, while the sum is 53.

The spelling of 21104255577176 in words is "twenty-one trillion, one hundred four billion, two hundred fifty-five million, five hundred seventy-seven thousand, one hundred seventy-six".