86642806424 has 32 divisors (see below), whose sum is σ = 172168552080. Its totient is φ = 40735847424.

The previous prime is 86642806399. The next prime is 86642806457. The reversal of 86642806424 is 42460824668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141182 + ... + 439565.

Almost surely, 2^86642806424 is an apocalyptic number.

It is an amenable number.

86642806424 is a deficient number, since it is larger than the sum of its proper divisors (85525745656).

86642806424 is a wasteful number, since it uses less digits than its factorization.

86642806424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581867 (or 581863 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 50.

The spelling of 86642806424 in words is "eighty-six billion, six hundred forty-two million, eight hundred six thousand, four hundred twenty-four".