20113032504 has 64 divisors (see below), whose sum is σ = 51257808000. Its totient is φ = 6574861440.

The previous prime is 20113032491. The next prime is 20113032517. The reversal of 20113032504 is 40523031102.

It is an interprime number because it is at equal distance from previous prime (20113032491) and next prime (20113032517).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 579267 + ... + 613005.

It is an arithmetic number, because the mean of its divisors is an integer number (800903250).

Almost surely, 2^20113032504 is an apocalyptic number.

20113032504 is a gapful number since it is divisible by the number (24) 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 20113032504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25628904000).

20113032504 is an abundant number, since it is smaller than the sum of its proper divisors (31144775496).

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

20113032504 is a wasteful number, since it uses less digits than its factorization.

20113032504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34228 (or 34224 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20113032504 its reverse (40523031102), we get a palindrome (60636063606).

The spelling of 20113032504 in words is "twenty billion, one hundred thirteen million, thirty-two thousand, five hundred four".