85967756641 has 4 divisors (see below), whose sum is σ = 92580661012. Its totient is φ = 79354852272.

The previous prime is 85967756599. The next prime is 85967756669. The reversal of 85967756641 is 14665776958.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58343987025 + 27623769616 = 241545^2 + 166204^2 .

It is a cyclic number.

It is not a de Polignac number, because 85967756641 - 2²¹ = 85965659489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85967750641) 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, 3306452166 + ... + 3306452191.

It is an arithmetic number, because the mean of its divisors is an integer number (23145165253).

Almost surely, 2^85967756641 is an apocalyptic number.

It is an amenable number.

85967756641 is a deficient number, since it is larger than the sum of its proper divisors (6612904371).

85967756641 is a wasteful number, since it uses less digits than its factorization.

85967756641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6612904370.

The product of its digits is 76204800, while the sum is 64.

The spelling of 85967756641 in words is "eighty-five billion, nine hundred sixty-seven million, seven hundred fifty-six thousand, six hundred forty-one".