15502220550 has 36 divisors (see below), whose sum is σ = 41649300420. Its totient is φ = 4133925360.

The previous prime is 15502220537. The next prime is 15502220611. The reversal of 15502220550 is 5502220551.

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 17 ways as a sum of consecutive naturals, for example, 17224240 + ... + 17225139.

Almost surely, 2^15502220550 is an apocalyptic number.

15502220550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15502220550 is an abundant number, since it is smaller than the sum of its proper divisors (26147079870).

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

15502220550 is a wasteful number, since it uses less digits than its factorization.

15502220550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34449397 (or 34449389 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

Subtracting from 15502220550 its reverse (5502220551), we obtain a palindrome (9999999999).

The spelling of 15502220550 in words is "fifteen billion, five hundred two million, two hundred twenty thousand, five hundred fifty".