78672227687 has 8 divisors (see below), whose sum is σ = 78805426176. Its totient is φ = 78539080672.

The previous prime is 78672227671. The next prime is 78672227719.

78672227687 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 78672227687 - 2⁴ = 78672227671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78672227287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4149353 + ... + 4168269.

It is an arithmetic number, because the mean of its divisors is an integer number (9850678272).

Almost surely, 2^78672227687 is an apocalyptic number.

78672227687 is a deficient number, since it is larger than the sum of its proper divisors (133198489).

78672227687 is a wasteful number, since it uses less digits than its factorization.

78672227687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25737.

The product of its digits is 44255232, while the sum is 62.

The spelling of 78672227687 in words is "seventy-eight billion, six hundred seventy-two million, two hundred twenty-seven thousand, six hundred eighty-seven".