84713748545 has 4 divisors (see below), whose sum is σ = 101656498260. Its totient is φ = 67770998832.

The previous prime is 84713748523. The next prime is 84713748563. The reversal of 84713748545 is 54584731748.

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 36817550641 + 47896197904 = 191879^2 + 218852^2 .

It is a cyclic number.

It is not a de Polignac number, because 84713748545 - 2²⁴ = 84696971329 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8471374850 + ... + 8471374859.

It is an arithmetic number, because the mean of its divisors is an integer number (25414124565).

Almost surely, 2^84713748545 is an apocalyptic number.

It is an amenable number.

84713748545 is a deficient number, since it is larger than the sum of its proper divisors (16942749715).

84713748545 is a wasteful number, since it uses less digits than its factorization.

84713748545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16942749714.

The product of its digits is 15052800, while the sum is 56.

The spelling of 84713748545 in words is "eighty-four billion, seven hundred thirteen million, seven hundred forty-eight thousand, five hundred forty-five".