84231645507 has 6 divisors (see below), whose sum is σ = 121667932412. Its totient is φ = 56154430332.

The previous prime is 84231645503. The next prime is 84231645521. The reversal of 84231645507 is 70554613248.

84231645507 is a `hidden beast` number, since 8 + 4 + 2 + 31 + 64 + 550 + 7 = 666.

It is not a de Polignac number, because 84231645507 - 2² = 84231645503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84231645503) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4679535853 + ... + 4679535870.

Almost surely, 2^84231645507 is an apocalyptic number.

84231645507 is a deficient number, since it is larger than the sum of its proper divisors (37436286905).

84231645507 is a wasteful number, since it uses less digits than its factorization.

84231645507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9359071729 (or 9359071726 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 84231645507 in words is "eighty-four billion, two hundred thirty-one million, six hundred forty-five thousand, five hundred seven".