20635560670 has 64 divisors (see below), whose sum is σ = 41174977536. Its totient is φ = 7406277120.

The previous prime is 20635560623. The next prime is 20635560677. The reversal of 20635560670 is 7606553602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20635560677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1191775 + ... + 1208965.

It is an arithmetic number, because the mean of its divisors is an integer number (643359024).

Almost surely, 2^20635560670 is an apocalyptic number.

20635560670 is a deficient number, since it is larger than the sum of its proper divisors (20539416866).

20635560670 is a wasteful number, since it uses less digits than its factorization.

20635560670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17545.

The product of its (nonzero) digits is 226800, while the sum is 40.

The spelling of 20635560670 in words is "twenty billion, six hundred thirty-five million, five hundred sixty thousand, six hundred seventy".