85224959999 has 4 divisors (see below), whose sum is σ = 85225834920. Its totient is φ = 85224085080.

The previous prime is 85224959983. The next prime is 85224960011. The reversal of 85224959999 is 99995942258.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 85224959999 - 2⁴ = 85224959983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85224959399) 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, 269972 + ... + 493289.

It is an arithmetic number, because the mean of its divisors is an integer number (21306458730).

Almost surely, 2^85224959999 is an apocalyptic number.

85224959999 is a deficient number, since it is larger than the sum of its proper divisors (874921).

85224959999 is a wasteful number, since it uses less digits than its factorization.

85224959999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874920.

The product of its digits is 188956800, while the sum is 71.

The spelling of 85224959999 in words is "eighty-five billion, two hundred twenty-four million, nine hundred fifty-nine thousand, nine hundred ninety-nine".