83774996987111 has 2 divisors, whose sum is σ = 83774996987112. Its totient is φ = 83774996987110.

The previous prime is 83774996987107. The next prime is 83774996987159. The reversal of 83774996987111 is 11178969947738.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83774996987111 - 2² = 83774996987107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83774996981111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41887498493555 + 41887498493556.

It is an arithmetic number, because the mean of its divisors is an integer number (41887498493556).

Almost surely, 2^{83774996987111} is an apocalyptic number.

83774996987111 is a deficient number, since it is larger than the sum of its proper divisors (1).

83774996987111 is an equidigital number, since it uses as much as digits as its factorization.

83774996987111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152216576, while the sum is 80.

The spelling of 83774996987111 in words is "eighty-three trillion, seven hundred seventy-four billion, nine hundred ninety-six million, nine hundred eighty-seven thousand, one hundred eleven".