20935923090 has 32 divisors (see below), whose sum is σ = 50302926720. Its totient is φ = 5576618672.

The previous prime is 20935923089. The next prime is 20935923097. The reversal of 20935923090 is 9032953902.

It is not an unprimeable number, because it can be changed into a prime (20935923097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23602627 + ... + 23603513.

It is an arithmetic number, because the mean of its divisors is an integer number (1571966460).

Almost surely, 2^20935923090 is an apocalyptic number.

20935923090 is an abundant number, since it is smaller than the sum of its proper divisors (29367003630).

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

20935923090 is an frugal number, since it uses more digits than its factorization.

20935923090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2671 (or 897 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 42.

The spelling of 20935923090 in words is "twenty billion, nine hundred thirty-five million, nine hundred twenty-three thousand, ninety".