20009635152 has 120 divisors (see below), whose sum is σ = 56499267744. Its totient is φ = 6099005952.

The previous prime is 20009635127. The next prime is 20009635153. The reversal of 20009635152 is 25153690002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20009635153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 856458 + ... + 879510.

Almost surely, 2^20009635152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20009635152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28249633872).

20009635152 is an abundant number, since it is smaller than the sum of its proper divisors (36489632592).

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

20009635152 is a wasteful number, since it uses less digits than its factorization.

20009635152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23197 (or 23178 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 33.

The spelling of 20009635152 in words is "twenty billion, nine million, six hundred thirty-five thousand, one hundred fifty-two".