84012544507 has 4 divisors (see below), whose sum is σ = 86283153856. Its totient is φ = 81741935160.

The previous prime is 84012544493. The next prime is 84012544513. The reversal of 84012544507 is 70544521048.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84012544507 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 84012544507.

It is not an unprimeable number, because it can be changed into a prime (84012544537) 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, 1135304619 + ... + 1135304692.

It is an arithmetic number, because the mean of its divisors is an integer number (21570788464).

Almost surely, 2^84012544507 is an apocalyptic number.

84012544507 is a deficient number, since it is larger than the sum of its proper divisors (2270609349).

84012544507 is a wasteful number, since it uses less digits than its factorization.

84012544507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270609348.

The product of its (nonzero) digits is 179200, while the sum is 40.

The spelling of 84012544507 in words is "eighty-four billion, twelve million, five hundred forty-four thousand, five hundred seven".