85231772604099 has 24 divisors (see below), whose sum is σ = 134383941003312. Its totient is φ = 51625108365120.

The previous prime is 85231772604073. The next prime is 85231772604169. The reversal of 85231772604099 is 99040627713258.

85231772604099 is a `hidden beast` number, since 8 + 5 + 2 + 3 + 17 + 7 + 2 + 604 + 0 + 9 + 9 = 666.

It is not a de Polignac number, because 85231772604099 - 2¹² = 85231772600003 is a prime.

It is a super-2 number, since 2×85231772604099² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85231772604029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254093172 + ... + 254428385.

It is an arithmetic number, because the mean of its divisors is an integer number (5599330875138).

It is a 2-persistent number, because it is pandigital, and so is 2⋅85231772604099 = 170463545208198, but 3⋅85231772604099 = 255695317812297 is not.

Almost surely, 2^{85231772604099} is an apocalyptic number.

85231772604099 is a deficient number, since it is larger than the sum of its proper divisors (49152168399213).

85231772604099 is a wasteful number, since it uses less digits than its factorization.

85231772604099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508523267 (or 508523264 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 63.

The spelling of 85231772604099 in words is "eighty-five trillion, two hundred thirty-one billion, seven hundred seventy-two million, six hundred four thousand, ninety-nine".