85336578691 has 16 divisors (see below), whose sum is σ = 108417691648. Its totient is φ = 65341015200.

The previous prime is 85336578683. The next prime is 85336578709. The reversal of 85336578691 is 19687563358.

It is a cyclic number.

It is not a de Polignac number, because 85336578691 - 2³ = 85336578683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85336578601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15122415 + ... + 15128056.

It is an arithmetic number, because the mean of its divisors is an integer number (6776105728).

Almost surely, 2^85336578691 is an apocalyptic number.

85336578691 is a deficient number, since it is larger than the sum of its proper divisors (23081112957).

85336578691 is a wasteful number, since it uses less digits than its factorization.

85336578691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30250522.

The product of its digits is 32659200, while the sum is 61.

The spelling of 85336578691 in words is "eighty-five billion, three hundred thirty-six million, five hundred seventy-eight thousand, six hundred ninety-one".