13287957500 has 60 divisors (see below), whose sum is σ = 29676625440. Its totient is φ = 5202048000.

The previous prime is 13287957497. The next prime is 13287957539. The reversal of 13287957500 is 575978231.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 60956 + ... + 174044.

It is an arithmetic number, because the mean of its divisors is an integer number (494610424).

Almost surely, 2^13287957500 is an apocalyptic number.

13287957500 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 13287957500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14838312720).

13287957500 is an abundant number, since it is smaller than the sum of its proper divisors (16388667940).

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

13287957500 is a wasteful number, since it uses less digits than its factorization.

13287957500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113160 (or 113143 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 47.

The spelling of 13287957500 in words is "thirteen billion, two hundred eighty-seven million, nine hundred fifty-seven thousand, five hundred".