82139279895 has 48 divisors (see below), whose sum is σ = 144406297152. Its totient is φ = 43183203840.

The previous prime is 82139279879. The next prime is 82139279909. The reversal of 82139279895 is 59897293128.

It is not a de Polignac number, because 82139279895 - 2⁴ = 82139279879 is a prime.

It is a super-2 number, since 2×82139279895² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6849805 + ... + 6861785.

It is an arithmetic number, because the mean of its divisors is an integer number (3008464524).

Almost surely, 2^82139279895 is an apocalyptic number.

82139279895 is a deficient number, since it is larger than the sum of its proper divisors (62267017257).

82139279895 is a wasteful number, since it uses less digits than its factorization.

82139279895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14152 (or 14149 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 63.

The spelling of 82139279895 in words is "eighty-two billion, one hundred thirty-nine million, two hundred seventy-nine thousand, eight hundred ninety-five".