20113765290 has 80 divisors (see below), whose sum is σ = 54106224480. Its totient is φ = 5361435360.

The previous prime is 20113765261. The next prime is 20113765297. The reversal of 20113765290 is 9256731102.

It is not an unprimeable number, because it can be changed into a prime (20113765297) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3057705 + ... + 3064275.

It is an arithmetic number, because the mean of its divisors is an integer number (676327806).

Almost surely, 2^20113765290 is an apocalyptic number.

20113765290 is an abundant number, since it is smaller than the sum of its proper divisors (33992459190).

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

20113765290 is a wasteful number, since it uses less digits than its factorization.

20113765290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10369 (or 10360 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The spelling of 20113765290 in words is "twenty billion, one hundred thirteen million, seven hundred sixty-five thousand, two hundred ninety".