78104158099 has 16 divisors (see below), whose sum is σ = 89204613120. Its totient is φ = 67729382560.

The previous prime is 78104158079. The next prime is 78104158109. The reversal of 78104158099 is 99085140187.

It is a cyclic number.

It is not a de Polignac number, because 78104158099 - 2¹⁵ = 78104125331 is a prime.

It is a super-2 number, since 2×78104158099² (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 (78104158009) 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 15 ways as a sum of consecutive naturals, for example, 1448467 + ... + 1501420.

It is an arithmetic number, because the mean of its divisors is an integer number (5575288320).

Almost surely, 2^78104158099 is an apocalyptic number.

78104158099 is a deficient number, since it is larger than the sum of its proper divisors (11100455021).

78104158099 is a wasteful number, since it uses less digits than its factorization.

78104158099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950010.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 78104158099 in words is "seventy-eight billion, one hundred four million, one hundred fifty-eight thousand, ninety-nine".