13278869073 has 12 divisors (see below), whose sum is σ = 19841988660. Its totient is φ = 8547317856.

The previous prime is 13278869057. The next prime is 13278869147. The reversal of 13278869073 is 37096887231.

It can be written as a sum of positive squares in 2 ways, for example, as 4083593409 + 9195275664 = 63903^2 + 95892^2 .

It is not a de Polignac number, because 13278869073 - 2⁴ = 13278869057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13278869033) 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, 25438186 + ... + 25438707.

It is an arithmetic number, because the mean of its divisors is an integer number (1653499055).

Almost surely, 2^13278869073 is an apocalyptic number.

It is an amenable number.

13278869073 is a deficient number, since it is larger than the sum of its proper divisors (6563119587).

13278869073 is a wasteful number, since it uses less digits than its factorization.

13278869073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50876928 (or 50876925 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 13278869073 in words is "thirteen billion, two hundred seventy-eight million, eight hundred sixty-nine thousand, seventy-three".