13515505100 has 72 divisors (see below), whose sum is σ = 30579709440. Its totient is φ = 5178539520.

The previous prime is 13515505051. The next prime is 13515505109. The reversal of 13515505100 is 150551531.

It is a self number, because there is not a number n which added to its sum of digits gives 13515505100.

It is not an unprimeable number, because it can be changed into a prime (13515505109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 349952 + ... + 386648.

Almost surely, 2^13515505100 is an apocalyptic number.

13515505100 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 13515505100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15289854720).

13515505100 is an abundant number, since it is smaller than the sum of its proper divisors (17064204340).

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

13515505100 is a wasteful number, since it uses less digits than its factorization.

13515505100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36867 (or 36860 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 26.

The spelling of 13515505100 in words is "thirteen billion, five hundred fifteen million, five hundred five thousand, one hundred".