83857442347 has 32 divisors (see below), whose sum is σ = 101416089600. Its totient is φ = 67812087168.

The previous prime is 83857442299. The next prime is 83857442369. The reversal of 83857442347 is 74324475838.

It is not a de Polignac number, because 83857442347 - 2⁷ = 83857442219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83857442387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6128029 + ... + 6141697.

It is an arithmetic number, because the mean of its divisors is an integer number (3169252800).

Almost surely, 2^83857442347 is an apocalyptic number.

83857442347 is a deficient number, since it is larger than the sum of its proper divisors (17558647253).

83857442347 is a wasteful number, since it uses less digits than its factorization.

83857442347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14395.

The product of its digits is 18063360, while the sum is 55.

The spelling of 83857442347 in words is "eighty-three billion, eight hundred fifty-seven million, four hundred forty-two thousand, three hundred forty-seven".