78715079287 has 8 divisors (see below), whose sum is σ = 86573704896. Its totient is φ = 71114113632.

The previous prime is 78715079279. The next prime is 78715079299. The reversal of 78715079287 is 78297051787.

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 78715079287 - 2³ = 78715079279 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 (78715079207) 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, 64414348 + ... + 64415569.

It is an arithmetic number, because the mean of its divisors is an integer number (10821713112).

Almost surely, 2^78715079287 is an apocalyptic number.

78715079287 is a deficient number, since it is larger than the sum of its proper divisors (7858625609).

78715079287 is a wasteful number, since it uses less digits than its factorization.

78715079287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128829977.

The product of its (nonzero) digits is 13829760, while the sum is 61.

The spelling of 78715079287 in words is "seventy-eight billion, seven hundred fifteen million, seventy-nine thousand, two hundred eighty-seven".