20764855850 has 48 divisors (see below), whose sum is σ = 40965994080. Its totient is φ = 7808673600.

The previous prime is 20764855847. The next prime is 20764855861. The reversal of 20764855850 is 5855846702.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41024 + ... + 207876.

It is an arithmetic number, because the mean of its divisors is an integer number (853458210).

Almost surely, 2^20764855850 is an apocalyptic number.

20764855850 is a deficient number, since it is larger than the sum of its proper divisors (20201138230).

20764855850 is a wasteful number, since it uses less digits than its factorization.

20764855850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167015 (or 167010 counting only the distinct ones).

The product of its (nonzero) digits is 2688000, while the sum is 50.

The spelling of 20764855850 in words is "twenty billion, seven hundred sixty-four million, eight hundred fifty-five thousand, eight hundred fifty".