20609562090 has 32 divisors (see below), whose sum is σ = 53267792256. Its totient is φ = 5073122880.

The previous prime is 20609562019. The next prime is 20609562097. The reversal of 20609562090 is 9026590602.

20609562090 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20609562097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26422126 + ... + 26422905.

It is an arithmetic number, because the mean of its divisors is an integer number (1664618508).

Almost surely, 2^20609562090 is an apocalyptic number.

20609562090 is an abundant number, since it is smaller than the sum of its proper divisors (32658230166).

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

20609562090 is a wasteful number, since it uses less digits than its factorization.

20609562090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52845054.

The product of its (nonzero) digits is 58320, while the sum is 39.

The spelling of 20609562090 in words is "twenty billion, six hundred nine million, five hundred sixty-two thousand, ninety".