83837542639 has 2 divisors, whose sum is σ = 83837542640. Its totient is φ = 83837542638.

The previous prime is 83837542619. The next prime is 83837542681. The reversal of 83837542639 is 93624573838.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83837542639 - 2⁷ = 83837542511 is a prime.

It is a super-2 number, since 2×83837542639² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83837542619) 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 as a sum of consecutive naturals, namely, 41918771319 + 41918771320.

It is an arithmetic number, because the mean of its divisors is an integer number (41918771320).

Almost surely, 2^83837542639 is an apocalyptic number.

83837542639 is a deficient number, since it is larger than the sum of its proper divisors (1).

83837542639 is an equidigital number, since it uses as much as digits as its factorization.

83837542639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 58.

The spelling of 83837542639 in words is "eighty-three billion, eight hundred thirty-seven million, five hundred forty-two thousand, six hundred thirty-nine".