8158321079 has 4 divisors (see below), whose sum is σ = 8270078976. Its totient is φ = 8046563184.

The previous prime is 8158321069. The next prime is 8158321133. The reversal of 8158321079 is 9701238518.

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

It is a cyclic number.

It is not a de Polignac number, because 8158321079 - 2¹⁶ = 8158255543 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 (8158321069) 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, 55878839 + ... + 55878984.

It is an arithmetic number, because the mean of its divisors is an integer number (2067519744).

Almost surely, 2^8158321079 is an apocalyptic number.

8158321079 is a deficient number, since it is larger than the sum of its proper divisors (111757897).

8158321079 is a wasteful number, since it uses less digits than its factorization.

8158321079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111757896.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 8158321079 is about 90323.4248630996. The cubic root of 8158321079 is about 2013.1073344856.

The spelling of 8158321079 in words is "eight billion, one hundred fifty-eight million, three hundred twenty-one thousand, seventy-nine".