20369398650 has 24 divisors (see below), whose sum is σ = 50516109024. Its totient is φ = 5431839600.

The previous prime is 20369398627. The next prime is 20369398717. The reversal of 20369398650 is 5689396302.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20369398593 and 20369398602.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67897846 + ... + 67898145.

It is an arithmetic number, because the mean of its divisors is an integer number (2104837876).

Almost surely, 2^20369398650 is an apocalyptic number.

20369398650 is an abundant number, since it is smaller than the sum of its proper divisors (30146710374).

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

20369398650 is a wasteful number, since it uses less digits than its factorization.

20369398650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135796006 (or 135796001 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 20369398650 in words is "twenty billion, three hundred sixty-nine million, three hundred ninety-eight thousand, six hundred fifty".