87934218433 has 4 divisors (see below), whose sum is σ = 88576074180. Its totient is φ = 87292362688.

The previous prime is 87934218409. The next prime is 87934218451. The reversal of 87934218433 is 33481243978.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70645387264 + 17288831169 = 265792^2 + 131487^2 .

It is a cyclic number.

It is not a de Polignac number, because 87934218433 - 2¹³ = 87934210241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87934218473) 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, 320927668 + ... + 320927941.

It is an arithmetic number, because the mean of its divisors is an integer number (22144018545).

Almost surely, 2^87934218433 is an apocalyptic number.

It is an amenable number.

87934218433 is a deficient number, since it is larger than the sum of its proper divisors (641855747).

87934218433 is a wasteful number, since it uses less digits than its factorization.

87934218433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641855746.

The product of its digits is 3483648, while the sum is 52.

The spelling of 87934218433 in words is "eighty-seven billion, nine hundred thirty-four million, two hundred eighteen thousand, four hundred thirty-three".