13070991447 has 48 divisors (see below), whose sum is σ = 19993184640. Its totient is φ = 8215420416.

The previous prime is 13070991397. The next prime is 13070991481. The reversal of 13070991447 is 74419907031.

13070991447 is a `hidden beast` number, since 130 + 70 + 9 + 9 + 1 + 447 = 666.

It is not a de Polignac number, because 13070991447 - 2⁶ = 13070991383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13070991047) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6831763 + ... + 6833675.

It is an arithmetic number, because the mean of its divisors is an integer number (416524680).

Almost surely, 2^13070991447 is an apocalyptic number.

13070991447 is a deficient number, since it is larger than the sum of its proper divisors (6922193193).

13070991447 is a wasteful number, since it uses less digits than its factorization.

13070991447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The spelling of 13070991447 in words is "thirteen billion, seventy million, nine hundred ninety-one thousand, four hundred forty-seven".