83956129279 has 8 divisors (see below), whose sum is σ = 91800030672. Its totient is φ = 76147482240.

The previous prime is 83956129277. The next prime is 83956129343. The reversal of 83956129279 is 97292165938.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83956129279 - 2¹ = 83956129277 is a prime.

It is a super-2 number, since 2×83956129279² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83956129277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8808604 + ... + 8818129.

It is an arithmetic number, because the mean of its divisors is an integer number (11475003834).

Almost surely, 2^83956129279 is an apocalyptic number.

83956129279 is a deficient number, since it is larger than the sum of its proper divisors (7843901393).

83956129279 is a wasteful number, since it uses less digits than its factorization.

83956129279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17627177.

The product of its digits is 14696640, while the sum is 61.

The spelling of 83956129279 in words is "eighty-three billion, nine hundred fifty-six million, one hundred twenty-nine thousand, two hundred seventy-nine".