13091023872 has 352 divisors, whose sum is σ = 40622960640. Its totient is φ = 4160471040.

The previous prime is 13091023867. The next prime is 13091023963. The reversal of 13091023872 is 27832019031.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68539297 + ... + 68539487.

Almost surely, 2^13091023872 is an apocalyptic number.

13091023872 is a gapful number since it is divisible by the number (12) 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 13091023872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20311480320).

13091023872 is an abundant number, since it is smaller than the sum of its proper divisors (27531936768).

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

13091023872 is a wasteful number, since it uses less digits than its factorization.

13091023872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The spelling of 13091023872 in words is "thirteen billion, ninety-one million, twenty-three thousand, eight hundred seventy-two".