13091497872 has 20 divisors (see below), whose sum is σ = 33819702960. Its totient is φ = 4363832608.

The previous prime is 13091497871. The next prime is 13091497883. The reversal of 13091497872 is 27879419031.

It is not an unprimeable number, because it can be changed into a prime (13091497871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136369722 + ... + 136369817.

It is an arithmetic number, because the mean of its divisors is an integer number (1690985148).

Almost surely, 2^13091497872 is an apocalyptic number.

13091497872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13091497872 is an abundant number, since it is smaller than the sum of its proper divisors (20728205088).

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

13091497872 is a wasteful number, since it uses less digits than its factorization.

13091497872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272739550 (or 272739544 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 51.

The spelling of 13091497872 in words is "thirteen billion, ninety-one million, four hundred ninety-seven thousand, eight hundred seventy-two".