85761824139 has 16 divisors (see below), whose sum is σ = 127061917600. Its totient is φ = 57171235968.

The previous prime is 85761824131. The next prime is 85761824153. The reversal of 85761824139 is 93142816758.

85761824139 is a `hidden beast` number, since 8 + 5 + 7 + 618 + 2 + 4 + 13 + 9 = 666.

It is not a de Polignac number, because 85761824139 - 2³ = 85761824131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85761824131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437967 + ... + 602775.

It is an arithmetic number, because the mean of its divisors is an integer number (7941369850).

Almost surely, 2^85761824139 is an apocalyptic number.

85761824139 is a deficient number, since it is larger than the sum of its proper divisors (41300093461).

85761824139 is a wasteful number, since it uses less digits than its factorization.

85761824139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184091 (or 184085 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 85761824139 in words is "eighty-five billion, seven hundred sixty-one million, eight hundred twenty-four thousand, one hundred thirty-nine".