86722544167 has 4 divisors (see below), whose sum is σ = 99111479056. Its totient is φ = 74333609280.

The previous prime is 86722544149. The next prime is 86722544203. The reversal of 86722544167 is 76144522768.

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

It is a de Polignac number, because none of the positive numbers 2^k-86722544167 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 (86722548167) 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, 6194467434 + ... + 6194467447.

It is an arithmetic number, because the mean of its divisors is an integer number (24777869764).

Almost surely, 2^86722544167 is an apocalyptic number.

86722544167 is a deficient number, since it is larger than the sum of its proper divisors (12388934889).

86722544167 is a wasteful number, since it uses less digits than its factorization.

86722544167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388934888.

The product of its digits is 4515840, while the sum is 52.

The spelling of 86722544167 in words is "eighty-six billion, seven hundred twenty-two million, five hundred forty-four thousand, one hundred sixty-seven".