8142652779 has 4 divisors (see below), whose sum is σ = 10856870376. Its totient is φ = 5428435184.

The previous prime is 8142652769. The next prime is 8142652807. The reversal of 8142652779 is 9772562418.

It is a happy number.

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 8142652779 - 2¹⁷ = 8142521707 is a prime.

It is a super-3 number, since 3×8142652779³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (8142652709) 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, 1357108794 + ... + 1357108799.

It is an arithmetic number, because the mean of its divisors is an integer number (2714217594).

Almost surely, 2^8142652779 is an apocalyptic number.

8142652779 is a deficient number, since it is larger than the sum of its proper divisors (2714217597).

8142652779 is a wasteful number, since it uses less digits than its factorization.

8142652779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714217596.

The product of its digits is 1693440, while the sum is 51.

The square root of 8142652779 is about 90236.6487575863. The cubic root of 8142652779 is about 2011.8177642685.

The spelling of 8142652779 in words is "eight billion, one hundred forty-two million, six hundred fifty-two thousand, seven hundred seventy-nine".