20716510001604 has 24 divisors (see below), whose sum is σ = 48389245843680. Its totient is φ = 6898257261504.

The previous prime is 20716510001591. The next prime is 20716510001641. The reversal of 20716510001604 is 40610001561702.

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, 905747134 + ... + 905770005.

It is an arithmetic number, because the mean of its divisors is an integer number (2016218576820).

Almost surely, 2^{20716510001604} is an apocalyptic number.

It is an amenable number.

20716510001604 is an abundant number, since it is smaller than the sum of its proper divisors (27672735842076).

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

20716510001604 is a wasteful number, since it uses less digits than its factorization.

20716510001604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811518099 (or 1811518097 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The spelling of 20716510001604 in words is "twenty trillion, seven hundred sixteen billion, five hundred ten million, one thousand, six hundred four".