87219469679 has 4 divisors (see below), whose sum is σ = 87272751384. Its totient is φ = 87166187976.

The previous prime is 87219469639. The next prime is 87219469693. The reversal of 87219469679 is 97696491278.

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

It is a cyclic number.

It is not a de Polignac number, because 87219469679 - 2¹⁶ = 87219404143 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 (87219469639) 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, 26638397 + ... + 26641670.

It is an arithmetic number, because the mean of its divisors is an integer number (21818187846).

Almost surely, 2^87219469679 is an apocalyptic number.

87219469679 is a deficient number, since it is larger than the sum of its proper divisors (53281705).

87219469679 is a wasteful number, since it uses less digits than its factorization.

87219469679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53281704.

The product of its digits is 82301184, while the sum is 68.

The spelling of 87219469679 in words is "eighty-seven billion, two hundred nineteen million, four hundred sixty-nine thousand, six hundred seventy-nine".