78089725915 has 8 divisors (see below), whose sum is σ = 95475740688. Its totient is φ = 61293067680.

The previous prime is 78089725907. The next prime is 78089725933. The reversal of 78089725915 is 51952798087.

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

It is not a de Polignac number, because 78089725915 - 2³ = 78089725907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 147338841 + ... + 147339370.

It is an arithmetic number, because the mean of its divisors is an integer number (11934467586).

Almost surely, 2^78089725915 is an apocalyptic number.

78089725915 is a deficient number, since it is larger than the sum of its proper divisors (17386014773).

78089725915 is a wasteful number, since it uses less digits than its factorization.

78089725915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294678269.

The product of its (nonzero) digits is 12700800, while the sum is 61.

The spelling of 78089725915 in words is "seventy-eight billion, eighty-nine million, seven hundred twenty-five thousand, nine hundred fifteen".