78881151 has 8 divisors (see below), whose sum is σ = 108017584. Its totient is φ = 51166080.

The previous prime is 78881147. The next prime is 78881161. The reversal of 78881151 is 15118887.

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

It is not a de Polignac number, because 78881151 - 2² = 78881147 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 7 ways as a sum of consecutive naturals, for example, 355210 + ... + 355431.

It is an arithmetic number, because the mean of its divisors is an integer number (13502198).

Almost surely, 2^78881151 is an apocalyptic number.

78881151 is a deficient number, since it is larger than the sum of its proper divisors (29136433).

78881151 is a wasteful number, since it uses less digits than its factorization.

78881151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710681.

The product of its digits is 17920, while the sum is 39.

The square root of 78881151 is about 8881.5061222745. The cubic root of 78881151 is about 428.8687608293.

The spelling of 78881151 in words is "seventy-eight million, eight hundred eighty-one thousand, one hundred fifty-one".