13123255122550 has 24 divisors (see below), whose sum is σ = 24718232440800. Its totient is φ = 5182855186080.

The previous prime is 13123255122491. The next prime is 13123255122587. The reversal of 13123255122550 is 5522155232131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1661167585 + ... + 1661175484.

It is an arithmetic number, because the mean of its divisors is an integer number (1029926351700).

Almost surely, 2^{13123255122550} is an apocalyptic number.

13123255122550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13123255122550 is a deficient number, since it is larger than the sum of its proper divisors (11594977318250).

13123255122550 is a wasteful number, since it uses less digits than its factorization.

13123255122550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322343160 (or 3322343155 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

The spelling of 13123255122550 in words is "thirteen trillion, one hundred twenty-three billion, two hundred fifty-five million, one hundred twenty-two thousand, five hundred fifty".