13091178248 has 8 divisors (see below), whose sum is σ = 24545959230. Its totient is φ = 6545589120.

The previous prime is 13091178223. The next prime is 13091178259. The reversal of 13091178248 is 84287119031.

It can be written as a sum of positive squares in only one way, i.e., 12840969124 + 250209124 = 113318^2 + 15818^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 13091178199 and 13091178208.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 818198633 + ... + 818198648.

Almost surely, 2^13091178248 is an apocalyptic number.

It is an amenable number.

13091178248 is a deficient number, since it is larger than the sum of its proper divisors (11454780982).

13091178248 is a wasteful number, since it uses less digits than its factorization.

13091178248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636397287 (or 1636397283 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 13091178248 in words is "thirteen billion, ninety-one million, one hundred seventy-eight thousand, two hundred forty-eight".