84134023971 has 16 divisors (see below), whose sum is σ = 113650980000. Its totient is φ = 55358005248.

The previous prime is 84134023913. The next prime is 84134023997. The reversal of 84134023971 is 17932043148.

It is not a de Polignac number, because 84134023971 - 2⁷ = 84134023843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84134025971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529246 + ... + 669603.

It is an arithmetic number, because the mean of its divisors is an integer number (7103186250).

Almost surely, 2^84134023971 is an apocalyptic number.

84134023971 is a deficient number, since it is larger than the sum of its proper divisors (29516956029).

84134023971 is a wasteful number, since it uses less digits than its factorization.

84134023971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199158.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 84134023971 in words is "eighty-four billion, one hundred thirty-four million, twenty-three thousand, nine hundred seventy-one".