20464667500 has 60 divisors (see below), whose sum is σ = 45793122760. Its totient is φ = 7995456000.

The previous prime is 20464667491. The next prime is 20464667521. The reversal of 20464667500 is 576646402.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12316 + ... + 202684.

Almost surely, 2^20464667500 is an apocalyptic number.

20464667500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20464667500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22896561380).

20464667500 is an abundant number, since it is smaller than the sum of its proper divisors (25328455260).

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

20464667500 is a wasteful number, since it uses less digits than its factorization.

20464667500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190436 (or 190419 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20464667500 in words is "twenty billion, four hundred sixty-four million, six hundred sixty-seven thousand, five hundred".