78672631117 has 16 divisors (see below), whose sum is σ = 83443322880. Its totient is φ = 74019391600.

The previous prime is 78672631111. The next prime is 78672631123. The reversal of 78672631117 is 71113627687.

It is an interprime number because it is at equal distance from previous prime (78672631111) and next prime (78672631123).

It is a cyclic number.

It is not a de Polignac number, because 78672631117 - 2¹⁹ = 78672106829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78672631111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647934 + ... + 759712.

It is an arithmetic number, because the mean of its divisors is an integer number (5215207680).

Almost surely, 2^78672631117 is an apocalyptic number.

It is an amenable number.

78672631117 is a deficient number, since it is larger than the sum of its proper divisors (4770691763).

78672631117 is a wasteful number, since it uses less digits than its factorization.

78672631117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112304.

The product of its digits is 592704, while the sum is 49.

The spelling of 78672631117 in words is "seventy-eight billion, six hundred seventy-two million, six hundred thirty-one thousand, one hundred seventeen".