21734664477116 has 24 divisors (see below), whose sum is σ = 38414819220960. Its totient is φ = 10759056118272.

The previous prime is 21734664477059. The next prime is 21734664477209. The reversal of 21734664477116 is 61177446643712.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5180201 + ... + 8384736.

It is an arithmetic number, because the mean of its divisors is an integer number (1600617467540).

Almost surely, 2^{21734664477116} is an apocalyptic number.

It is an amenable number.

21734664477116 is a deficient number, since it is larger than the sum of its proper divisors (16680154743844).

21734664477116 is a wasteful number, since it uses less digits than its factorization.

21734664477116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13568933 (or 13568931 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 59.

The spelling of 21734664477116 in words is "twenty-one trillion, seven hundred thirty-four billion, six hundred sixty-four million, four hundred seventy-seven thousand, one hundred sixteen".