78196669187 has 16 divisors (see below), whose sum is σ = 96641426112. Its totient is φ = 61613153280.

The previous prime is 78196669181. The next prime is 78196669217.

78196669187 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78196669187 - 2¹⁴ = 78196652803 is a prime.

It is a super-2 number, since 2×78196669187² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78196669181) 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, 1760858 + ... + 1804719.

It is an arithmetic number, because the mean of its divisors is an integer number (6040089132).

Almost surely, 2^78196669187 is an apocalyptic number.

78196669187 is a deficient number, since it is larger than the sum of its proper divisors (18444756925).

78196669187 is a wasteful number, since it uses less digits than its factorization.

78196669187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3565838.

The product of its digits is 54867456, while the sum is 68.

The spelling of 78196669187 in words is "seventy-eight billion, one hundred ninety-six million, six hundred sixty-nine thousand, one hundred eighty-seven".