78127672187 has 8 divisors (see below), whose sum is σ = 79953104880. Its totient is φ = 76302626400.

The previous prime is 78127672151. The next prime is 78127672211.

78127672187 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78127672187 - 2¹⁸ = 78127410043 is a prime.

It is a super-4 number, since 4×78127672187⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78127672127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333989 + ... + 517497.

It is an arithmetic number, because the mean of its divisors is an integer number (9994138110).

Almost surely, 2^78127672187 is an apocalyptic number.

78127672187 is a deficient number, since it is larger than the sum of its proper divisors (1825432693).

78127672187 is a wasteful number, since it uses less digits than its factorization.

78127672187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193453.

The product of its digits is 3687936, while the sum is 56.

The spelling of 78127672187 in words is "seventy-eight billion, one hundred twenty-seven million, six hundred seventy-two thousand, one hundred eighty-seven".