85368207661 has 4 divisors (see below), whose sum is σ = 93128953824. Its totient is φ = 77607461500.

The previous prime is 85368207653. The next prime is 85368207667. The reversal of 85368207661 is 16670286358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85368207661 - 2³ = 85368207653 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85368207599 and 85368207608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85368207667) 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, 3880373065 + ... + 3880373086.

It is an arithmetic number, because the mean of its divisors is an integer number (23282238456).

Almost surely, 2^85368207661 is an apocalyptic number.

It is an amenable number.

85368207661 is a deficient number, since it is larger than the sum of its proper divisors (7760746163).

85368207661 is a wasteful number, since it uses less digits than its factorization.

85368207661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7760746162.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 85368207661 in words is "eighty-five billion, three hundred sixty-eight million, two hundred seven thousand, six hundred sixty-one".