13155020405500 has 24 divisors (see below), whose sum is σ = 28730564566704. Its totient is φ = 5262008162000.

The previous prime is 13155020405491. The next prime is 13155020405557. The reversal of 13155020405500 is 550402055131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13155019906 + ... + 13155020905.

It is an arithmetic number, because the mean of its divisors is an integer number (1197106856946).

Almost surely, 2^{13155020405500} is an apocalyptic number.

13155020405500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13155020405500 is an abundant number, since it is smaller than the sum of its proper divisors (15575544161204).

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

13155020405500 is a wasteful number, since it uses less digits than its factorization.

13155020405500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26310040830 (or 26310040818 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

The spelling of 13155020405500 in words is "thirteen trillion, one hundred fifty-five billion, twenty million, four hundred five thousand, five hundred".