84573736939999 has 4 divisors (see below), whose sum is σ = 85524003647280. Its totient is φ = 83623470232720.

The previous prime is 84573736939981. The next prime is 84573736940029. The reversal of 84573736939999 is 99993963737548.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 84573736939999 - 2¹⁹ = 84573736415711 is a prime.

It is a super-2 number, since 2×84573736939999² (a number of 29 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 (84573736939969) 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, 475133353507 + ... + 475133353684.

It is an arithmetic number, because the mean of its divisors is an integer number (21381000911820).

Almost surely, 2^{84573736939999} is an apocalyptic number.

84573736939999 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

84573736939999 is a deficient number, since it is larger than the sum of its proper divisors (950266707281).

84573736939999 is an equidigital number, since it uses as much as digits as its factorization.

84573736939999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950266707280.

The product of its digits is 74996953920, while the sum is 91.

The spelling of 84573736939999 in words is "eighty-four trillion, five hundred seventy-three billion, seven hundred thirty-six million, nine hundred thirty-nine thousand, nine hundred ninety-nine".