15522665550 has 48 divisors (see below), whose sum is σ = 43995672192. Its totient is φ = 3548037600.

The previous prime is 15522665527. The next prime is 15522665563. The reversal of 15522665550 is 5556622551.

15522665550 is digitally balanced in base 2, 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 (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7390696 + ... + 7392795.

It is an arithmetic number, because the mean of its divisors is an integer number (916576504).

Almost surely, 2^15522665550 is an apocalyptic number.

15522665550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15522665550 is an abundant number, since it is smaller than the sum of its proper divisors (28473006642).

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

15522665550 is a wasteful number, since it uses less digits than its factorization.

15522665550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14783513 (or 14783508 counting only the distinct ones).

The product of its (nonzero) digits is 450000, while the sum is 42.

The spelling of 15522665550 in words is "fifteen billion, five hundred twenty-two million, six hundred sixty-five thousand, five hundred fifty".