20640503150 has 12 divisors (see below), whose sum is σ = 38391335952. Its totient is φ = 8256201240.

The previous prime is 20640503141. The next prime is 20640503153. The reversal of 20640503150 is 5130504602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20640503153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206404982 + ... + 206405081.

It is an arithmetic number, because the mean of its divisors is an integer number (3199277996).

Almost surely, 2^20640503150 is an apocalyptic number.

20640503150 is a deficient number, since it is larger than the sum of its proper divisors (17750832802).

20640503150 is a wasteful number, since it uses less digits than its factorization.

20640503150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412810075 (or 412810070 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 20640503150 in words is "twenty billion, six hundred forty million, five hundred three thousand, one hundred fifty".