21796431086718 has 32 divisors (see below), whose sum is σ = 48448043788320. Its totient is φ = 7263747489600.

The previous prime is 21796431086693. The next prime is 21796431086741. The reversal of 21796431086718 is 81768013469712.

21796431086718 is a `hidden beast` number, since 2 + 179 + 6 + 4 + 310 + 86 + 71 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47813805 + ... + 48267512.

It is an arithmetic number, because the mean of its divisors is an integer number (1514001368385).

Almost surely, 2^{21796431086718} is an apocalyptic number.

21796431086718 is an abundant number, since it is smaller than the sum of its proper divisors (26651612701602).

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

21796431086718 is a wasteful number, since it uses less digits than its factorization.

21796431086718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96085529 (or 96085523 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 63.

The spelling of 21796431086718 in words is "twenty-one trillion, seven hundred ninety-six billion, four hundred thirty-one million, eighty-six thousand, seven hundred eighteen".