78445259913 has 16 divisors (see below), whose sum is σ = 105364094976. Its totient is φ = 51912929040.

The previous prime is 78445259899. The next prime is 78445259917. The reversal of 78445259913 is 31995254487.

It is not a de Polignac number, because 78445259913 - 2²² = 78441065609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78445259917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80656 + ... + 404222.

It is an arithmetic number, because the mean of its divisors is an integer number (6585255936).

Almost surely, 2^78445259913 is an apocalyptic number.

It is an amenable number.

78445259913 is a deficient number, since it is larger than the sum of its proper divisors (26918835063).

78445259913 is a wasteful number, since it uses less digits than its factorization.

78445259913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324164.

The product of its digits is 10886400, while the sum is 57.

The spelling of 78445259913 in words is "seventy-eight billion, four hundred forty-five million, two hundred fifty-nine thousand, nine hundred thirteen".