13505212550 has 12 divisors (see below), whose sum is σ = 25119695436. Its totient is φ = 5402085000.

The previous prime is 13505212549. The next prime is 13505212561. The reversal of 13505212550 is 5521250531.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135052076 + ... + 135052175.

It is an arithmetic number, because the mean of its divisors is an integer number (2093307953).

Almost surely, 2^13505212550 is an apocalyptic number.

13505212550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13505212550 is a deficient number, since it is larger than the sum of its proper divisors (11614482886).

13505212550 is a wasteful number, since it uses less digits than its factorization.

13505212550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270104263 (or 270104258 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 29.

The spelling of 13505212550 in words is "thirteen billion, five hundred five million, two hundred twelve thousand, five hundred fifty".