13012813312500 has 84 divisors (see below), whose sum is σ = 37953553563296. Its totient is φ = 3470083500000.

The previous prime is 13012813312463. The next prime is 13012813312511. The reversal of 13012813312500 is 521331821031.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 34513336 + ... + 34888335.

Almost surely, 2^{13012813312500} is an apocalyptic number.

13012813312500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13012813312500 is an abundant number, since it is smaller than the sum of its proper divisors (24940740250796).

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

13012813312500 is an frugal number, since it uses more digits than its factorization.

13012813312500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69401708 (or 69401681 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 13012813312500 in words is "thirteen trillion, twelve billion, eight hundred thirteen million, three hundred twelve thousand, five hundred".