85122936865 has 32 divisors (see below), whose sum is σ = 111910222080. Its totient is φ = 61952588544.

The previous prime is 85122936863. The next prime is 85122936893. The reversal of 85122936865 is 56863922158.

It is a cyclic number.

It is not a de Polignac number, because 85122936865 - 2¹ = 85122936863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85122936863) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 32967 + ... + 413923.

It is an arithmetic number, because the mean of its divisors is an integer number (3497194440).

Almost surely, 2^85122936865 is an apocalyptic number.

It is an amenable number.

85122936865 is a deficient number, since it is larger than the sum of its proper divisors (26787285215).

85122936865 is a wasteful number, since it uses less digits than its factorization.

85122936865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381081.

The product of its digits is 6220800, while the sum is 55.

It can be divided in two parts, 8512293 and 6865, that added together give a palindrome (8519158).

The spelling of 85122936865 in words is "eighty-five billion, one hundred twenty-two million, nine hundred thirty-six thousand, eight hundred sixty-five".