13155320552500 has 240 divisors, whose sum is σ = 32992644174336. Its totient is φ = 4494672000000.

The previous prime is 13155320552471. The next prime is 13155320552509. The reversal of 13155320552500 is 525502355131.

It is a self number, because there is not a number n which added to its sum of digits gives 13155320552500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13155320552509) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 9581441814 + ... + 9581443186.

Almost surely, 2^{13155320552500} is an apocalyptic number.

13155320552500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13155320552500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16496322087168).

13155320552500 is an abundant number, since it is smaller than the sum of its proper divisors (19837323621836).

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

13155320552500 is a wasteful number, since it uses less digits than its factorization.

13155320552500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 2899 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 37.

The spelling of 13155320552500 in words is "thirteen trillion, one hundred fifty-five billion, three hundred twenty million, five hundred fifty-two thousand, five hundred".