86173661773 has 4 divisors (see below), whose sum is σ = 86228100288. Its totient is φ = 86119223260.

The previous prime is 86173661767. The next prime is 86173661797. The reversal of 86173661773 is 37716637168.

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 86173661773 - 2⁵ = 86173661741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86173667773) 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, 27216883 + ... + 27220048.

It is an arithmetic number, because the mean of its divisors is an integer number (21557025072).

Almost surely, 2^86173661773 is an apocalyptic number.

It is an amenable number.

86173661773 is a deficient number, since it is larger than the sum of its proper divisors (54438515).

86173661773 is a wasteful number, since it uses less digits than its factorization.

86173661773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54438514.

The product of its digits is 5334336, while the sum is 55.

The spelling of 86173661773 in words is "eighty-six billion, one hundred seventy-three million, six hundred sixty-one thousand, seven hundred seventy-three".