20669691710 has 32 divisors (see below), whose sum is σ = 38511439200. Its totient is φ = 7977997440.

The previous prime is 20669691701. The next prime is 20669691733. The reversal of 20669691710 is 1719696602.

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, 484421 + ... + 525359.

It is an arithmetic number, because the mean of its divisors is an integer number (1203482475).

Almost surely, 2^20669691710 is an apocalyptic number.

20669691710 is a deficient number, since it is larger than the sum of its proper divisors (17841747490).

20669691710 is a wasteful number, since it uses less digits than its factorization.

20669691710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42716.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 20669691710 in words is "twenty billion, six hundred sixty-nine million, six hundred ninety-one thousand, seven hundred ten".