83840442706 has 4 divisors (see below), whose sum is σ = 125760664062. Its totient is φ = 41920221352.

The previous prime is 83840442641. The next prime is 83840442709. The reversal of 83840442706 is 60724404838.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 69213717225 + 14626725481 = 263085^2 + 120941^2 .

It is not an unprimeable number, because it can be changed into a prime (83840442709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20960110675 + ... + 20960110678.

Almost surely, 2^83840442706 is an apocalyptic number.

83840442706 is a deficient number, since it is larger than the sum of its proper divisors (41920221356).

83840442706 is a wasteful number, since it uses less digits than its factorization.

83840442706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41920221355.

The product of its (nonzero) digits is 1032192, while the sum is 46.

The spelling of 83840442706 in words is "eighty-three billion, eight hundred forty million, four hundred forty-two thousand, seven hundred six".