8721413475646 has 8 divisors (see below), whose sum is σ = 13089721683024. Its totient is φ = 4358172914640.

The previous prime is 8721413475637. The next prime is 8721413475743. The reversal of 8721413475646 is 6465743141278.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1266907290 + ... + 1266914173.

It is an arithmetic number, because the mean of its divisors is an integer number (1636215210378).

Almost surely, 2^{8721413475646} is an apocalyptic number.

8721413475646 is a deficient number, since it is larger than the sum of its proper divisors (4368308207378).

8721413475646 is a wasteful number, since it uses less digits than its factorization.

8721413475646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533823186.

The product of its digits is 27095040, while the sum is 58.

The spelling of 8721413475646 in words is "eight trillion, seven hundred twenty-one billion, four hundred thirteen million, four hundred seventy-five thousand, six hundred forty-six".