87778576339 has 4 divisors (see below), whose sum is σ = 92942022024. Its totient is φ = 82615130656.

The previous prime is 87778576313. The next prime is 87778576357. The reversal of 87778576339 is 93367587778.

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

It is not a de Polignac number, because 87778576339 - 2⁷ = 87778576211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87778570339) 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, 2581722817 + ... + 2581722850.

It is an arithmetic number, because the mean of its divisors is an integer number (23235505506).

Almost surely, 2^87778576339 is an apocalyptic number.

87778576339 is a deficient number, since it is larger than the sum of its proper divisors (5163445685).

87778576339 is a wasteful number, since it uses less digits than its factorization.

87778576339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163445684.

The product of its digits is 373403520, while the sum is 70.

The spelling of 87778576339 in words is "eighty-seven billion, seven hundred seventy-eight million, five hundred seventy-six thousand, three hundred thirty-nine".