83656042739 has 2 divisors, whose sum is σ = 83656042740. Its totient is φ = 83656042738.

The previous prime is 83656042663. The next prime is 83656042777. The reversal of 83656042739 is 93724065638.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83656042739 is a prime.

It is not a weakly prime, because it can be changed into another prime (83656048739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41828021369 + 41828021370.

It is an arithmetic number, because the mean of its divisors is an integer number (41828021370).

Almost surely, 2^83656042739 is an apocalyptic number.

83656042739 is a deficient number, since it is larger than the sum of its proper divisors (1).

83656042739 is an equidigital number, since it uses as much as digits as its factorization.

83656042739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6531840, while the sum is 53.

The spelling of 83656042739 in words is "eighty-three billion, six hundred fifty-six million, forty-two thousand, seven hundred thirty-nine".