15305316990 has 16 divisors (see below), whose sum is σ = 36732760848. Its totient is φ = 4081417856.

The previous prime is 15305316973. The next prime is 15305316991. The reversal of 15305316990 is 9961350351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15305316991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255088587 + ... + 255088646.

It is an arithmetic number, because the mean of its divisors is an integer number (2295797553).

Almost surely, 2^15305316990 is an apocalyptic number.

15305316990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15305316990 is an abundant number, since it is smaller than the sum of its proper divisors (21427443858).

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

15305316990 is a wasteful number, since it uses less digits than its factorization.

15305316990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510177243.

The product of its (nonzero) digits is 109350, while the sum is 42.

The spelling of 15305316990 in words is "fifteen billion, three hundred five million, three hundred sixteen thousand, nine hundred ninety".