13779265550 has 24 divisors (see below), whose sum is σ = 25666588632. Its totient is φ = 5503716000.

The previous prime is 13779265537. The next prime is 13779265583. The reversal of 13779265550 is 5556297731.

13779265550 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 (50).

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 164861 + ... + 233960.

It is an arithmetic number, because the mean of its divisors is an integer number (1069441193).

Almost surely, 2^13779265550 is an apocalyptic number.

13779265550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13779265550 is a deficient number, since it is larger than the sum of its proper divisors (11887323082).

13779265550 is a wasteful number, since it uses less digits than its factorization.

13779265550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399524 (or 399519 counting only the distinct ones).

The product of its (nonzero) digits is 1984500, while the sum is 50.

The spelling of 13779265550 in words is "thirteen billion, seven hundred seventy-nine million, two hundred sixty-five thousand, five hundred fifty".