21316666065102 has 12 divisors (see below), whose sum is σ = 46186109807760. Its totient is φ = 7105555355028.

The previous prime is 21316666065059. The next prime is 21316666065133. The reversal of 21316666065102 is 20156066661312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 592129612902 + ... + 592129612937.

It is an arithmetic number, because the mean of its divisors is an integer number (3848842483980).

Almost surely, 2^{21316666065102} is an apocalyptic number.

21316666065102 is an abundant number, since it is smaller than the sum of its proper divisors (24869443742658).

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

21316666065102 is a wasteful number, since it uses less digits than its factorization.

21316666065102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184259225847 (or 1184259225844 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 21316666065102 in words is "twenty-one trillion, three hundred sixteen billion, six hundred sixty-six million, sixty-five thousand, one hundred two".