83842293887 has 4 divisors (see below), whose sum is σ = 91464320616. Its totient is φ = 76220267160.

The previous prime is 83842293883. The next prime is 83842293893. The reversal of 83842293887 is 78839224838.

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 83842293887 - 2² = 83842293883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83842293881) 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, 3811013348 + ... + 3811013369.

It is an arithmetic number, because the mean of its divisors is an integer number (22866080154).

Almost surely, 2^83842293887 is an apocalyptic number.

83842293887 is a deficient number, since it is larger than the sum of its proper divisors (7622026729).

83842293887 is a wasteful number, since it uses less digits than its factorization.

83842293887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7622026728.

The product of its digits is 37158912, while the sum is 62.

The spelling of 83842293887 in words is "eighty-three billion, eight hundred forty-two million, two hundred ninety-three thousand, eight hundred eighty-seven".