20137680290 has 128 divisors (see below), whose sum is σ = 48476897280. Its totient is φ = 5842886400.

The previous prime is 20137680289. The next prime is 20137680341. The reversal of 20137680290 is 9208673102.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 517205 + ... + 554775.

It is an arithmetic number, because the mean of its divisors is an integer number (378725760).

Almost surely, 2^20137680290 is an apocalyptic number.

20137680290 is an abundant number, since it is smaller than the sum of its proper divisors (28339216990).

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

20137680290 is a wasteful number, since it uses less digits than its factorization.

20137680290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37648.

The product of its (nonzero) digits is 36288, while the sum is 38.

The spelling of 20137680290 in words is "twenty billion, one hundred thirty-seven million, six hundred eighty thousand, two hundred ninety".