90109928050 has 48 divisors (see below), whose sum is σ = 168050181600. Its totient is φ = 35948275200.

The previous prime is 90109928039. The next prime is 90109928059. The reversal of 90109928050 is 5082990109.

It is a junction number, because it is equal to n+sod(n) for n = 90109927988 and 90109928006.

It is not an unprimeable number, because it can be changed into a prime (90109928059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47701506 + ... + 47703394.

It is an arithmetic number, because the mean of its divisors is an integer number (3501045450).

Almost surely, 2^90109928050 is an apocalyptic number.

90109928050 is a deficient number, since it is larger than the sum of its proper divisors (77940253550).

90109928050 is a wasteful number, since it uses less digits than its factorization.

90109928050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3931 (or 3926 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 90109928050 in words is "ninety billion, one hundred nine million, nine hundred twenty-eight thousand, fifty".