15322120550 has 48 divisors (see below), whose sum is σ = 31103602992. Its totient is φ = 5569238400.

The previous prime is 15322120523. The next prime is 15322120637. The reversal of 15322120550 is 5502122351.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1665764 + ... + 1674936.

It is an arithmetic number, because the mean of its divisors is an integer number (647991729).

Almost surely, 2^15322120550 is an apocalyptic number.

15322120550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15322120550 is an abundant number, since it is smaller than the sum of its proper divisors (15781482442).

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

15322120550 is a wasteful number, since it uses less digits than its factorization.

15322120550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12233 (or 12228 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 26.

The spelling of 15322120550 in words is "fifteen billion, three hundred twenty-two million, one hundred twenty thousand, five hundred fifty".