83774996987135 has 16 divisors (see below), whose sum is σ = 100549146230784. Its totient is φ = 67007232256032.

The previous prime is 83774996987111. The next prime is 83774996987159. The reversal of 83774996987135 is 53178969947738.

It is an interprime number because it is at equal distance from previous prime (83774996987111) and next prime (83774996987159).

It is a cyclic number.

It is not a de Polignac number, because 83774996987135 - 2¹² = 83774996983039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642859394 + ... + 642989696.

It is an arithmetic number, because the mean of its divisors is an integer number (6284321639424).

Almost surely, 2^{83774996987135} is an apocalyptic number.

83774996987135 is a deficient number, since it is larger than the sum of its proper divisors (16774149243649).

83774996987135 is a wasteful number, since it uses less digits than its factorization.

83774996987135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153814.

The product of its digits is 17283248640, while the sum is 86.

The spelling of 83774996987135 in words is "eighty-three trillion, seven hundred seventy-four billion, nine hundred ninety-six million, nine hundred eighty-seven thousand, one hundred thirty-five".