87205868479 has 8 divisors (see below), whose sum is σ = 89239990400. Its totient is φ = 85172022936.

The previous prime is 87205868471. The next prime is 87205868501. The reversal of 87205868479 is 97486850278.

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 87205868479 - 2³ = 87205868471 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87205868479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87205868471) 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, 657334 + ... + 778780.

It is an arithmetic number, because the mean of its divisors is an integer number (11154998800).

Almost surely, 2^87205868479 is an apocalyptic number.

87205868479 is a deficient number, since it is larger than the sum of its proper divisors (2034121921).

87205868479 is a wasteful number, since it uses less digits than its factorization.

87205868479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138189.

The product of its (nonzero) digits is 54190080, while the sum is 64.

The spelling of 87205868479 in words is "eighty-seven billion, two hundred five million, eight hundred sixty-eight thousand, four hundred seventy-nine".