13499510328 has 128 divisors (see below), whose sum is σ = 38926080000. Its totient is φ = 4331698560.

The previous prime is 13499510293. The next prime is 13499510329. The reversal of 13499510328 is 82301599431.

It is a happy number.

13499510328 is a `hidden beast` number, since 13 + 4 + 99 + 510 + 32 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13499510329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 608373 + ... + 630171.

It is an arithmetic number, because the mean of its divisors is an integer number (304110000).

Almost surely, 2^13499510328 is an apocalyptic number.

13499510328 is a gapful number since it is divisible by the number (18) 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 13499510328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19463040000).

13499510328 is an abundant number, since it is smaller than the sum of its proper divisors (25426569672).

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

13499510328 is a wasteful number, since it uses less digits than its factorization.

13499510328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21922 (or 21912 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 13499510328 in words is "thirteen billion, four hundred ninety-nine million, five hundred ten thousand, three hundred twenty-eight".