13378906247 has 12 divisors (see below), whose sum is σ = 15650173080. Its totient is φ = 11403561456.

The previous prime is 13378906217. The next prime is 13378906253. The reversal of 13378906247 is 74260987331.

It is not a de Polignac number, because 13378906247 - 2¹⁰ = 13378905223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13378906195 and 13378906204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13378906217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 753908 + ... + 771449.

It is an arithmetic number, because the mean of its divisors is an integer number (1304181090).

Almost surely, 2^13378906247 is an apocalyptic number.

13378906247 is a deficient number, since it is larger than the sum of its proper divisors (2271266833).

13378906247 is a wasteful number, since it uses less digits than its factorization.

13378906247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525550 (or 1525543 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 13378906247 in words is "thirteen billion, three hundred seventy-eight million, nine hundred six thousand, two hundred forty-seven".