84512650709 has 4 divisors (see below), whose sum is σ = 87238865280. Its totient is φ = 81786436140.

The previous prime is 84512650697. The next prime is 84512650741. The reversal of 84512650709 is 90705621548.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84512650709 - 2³⁶ = 15793173973 is a prime.

It is a super-2 number, since 2×84512650709² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84512658709) 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, 1363107239 + ... + 1363107300.

It is an arithmetic number, because the mean of its divisors is an integer number (21809716320).

Almost surely, 2^84512650709 is an apocalyptic number.

It is an amenable number.

84512650709 is a deficient number, since it is larger than the sum of its proper divisors (2726214571).

84512650709 is a wasteful number, since it uses less digits than its factorization.

84512650709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726214570.

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 84512650709 in words is "eighty-four billion, five hundred twelve million, six hundred fifty thousand, seven hundred nine".