78106053609 has 12 divisors (see below), whose sum is σ = 113512003696. Its totient is φ = 51751249272.

The previous prime is 78106053517. The next prime is 78106053643. The reversal of 78106053609 is 90635060187.

It is a happy number.

78106053609 is a `hidden beast` number, since 7 + 8 + 1 + 0 + 605 + 36 + 0 + 9 = 666.

It is not a de Polignac number, because 78106053609 - 2⁸ = 78106053353 is a prime.

It is a super-2 number, since 2×78106053609² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78106053209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26619547 + ... + 26622480.

Almost surely, 2^78106053609 is an apocalyptic number.

It is an amenable number.

78106053609 is a deficient number, since it is larger than the sum of its proper divisors (35405950087).

78106053609 is a wasteful number, since it uses less digits than its factorization.

78106053609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53242196 (or 53242193 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 78106053609 in words is "seventy-eight billion, one hundred six million, fifty-three thousand, six hundred nine".