20723868770 has 32 divisors (see below), whose sum is σ = 40760660160. Its totient is φ = 7523634240.

The previous prime is 20723868761. The next prime is 20723868793. The reversal of 20723868770 is 7786832702.

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, 86240 + ... + 221099.

It is an arithmetic number, because the mean of its divisors is an integer number (1273770630).

Almost surely, 2^20723868770 is an apocalyptic number.

20723868770 is a deficient number, since it is larger than the sum of its proper divisors (20036791390).

20723868770 is a wasteful number, since it uses less digits than its factorization.

20723868770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307970.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 20723868770 in words is "twenty billion, seven hundred twenty-three million, eight hundred sixty-eight thousand, seven hundred seventy".