13870813550 has 48 divisors (see below), whose sum is σ = 29368870272. Its totient is φ = 4824626400.

The previous prime is 13870813543. The next prime is 13870813577. The reversal of 13870813550 is 5531807831.

It is a junction number, because it is equal to n+sod(n) for n = 13870813498 and 13870813507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535604 + ... + 560903.

It is an arithmetic number, because the mean of its divisors is an integer number (611851464).

Almost surely, 2^13870813550 is an apocalyptic number.

13870813550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13870813550 is an abundant number, since it is smaller than the sum of its proper divisors (15498056722).

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

13870813550 is a wasteful number, since it uses less digits than its factorization.

13870813550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096553 (or 1096548 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 13870813550 in words is "thirteen billion, eight hundred seventy million, eight hundred thirteen thousand, five hundred fifty".