78881167 has 4 divisors (see below), whose sum is σ = 79150680. Its totient is φ = 78611656.

The previous prime is 78881161. The next prime is 78881197. The reversal of 78881167 is 76118887.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78881167 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 (78881161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134317 + ... + 134902.

It is an arithmetic number, because the mean of its divisors is an integer number (19787670).

Almost surely, 2^78881167 is an apocalyptic number.

78881167 is a deficient number, since it is larger than the sum of its proper divisors (269513).

78881167 is a wasteful number, since it uses less digits than its factorization.

78881167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269512.

The product of its digits is 150528, while the sum is 46.

The square root of 78881167 is about 8881.5070230226. The cubic root of 78881167 is about 428.8687898260.

The spelling of 78881167 in words is "seventy-eight million, eight hundred eighty-one thousand, one hundred sixty-seven".