87917583427 has 4 divisors (see below), whose sum is σ = 92544824680. Its totient is φ = 83290342176.

The previous prime is 87917583319. The next prime is 87917583431. The reversal of 87917583427 is 72438571978.

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 87917583427 - 2¹¹ = 87917581379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87917580427) 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, 2313620598 + ... + 2313620635.

It is an arithmetic number, because the mean of its divisors is an integer number (23136206170).

Almost surely, 2^87917583427 is an apocalyptic number.

87917583427 is a deficient number, since it is larger than the sum of its proper divisors (4627241253).

87917583427 is a wasteful number, since it uses less digits than its factorization.

87917583427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4627241252.

The product of its digits is 23708160, while the sum is 61.

The spelling of 87917583427 in words is "eighty-seven billion, nine hundred seventeen million, five hundred eighty-three thousand, four hundred twenty-seven".