84387881267 has 2 divisors, whose sum is σ = 84387881268. Its totient is φ = 84387881266.

The previous prime is 84387881251. The next prime is 84387881293. The reversal of 84387881267 is 76218878348.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84387881267 - 2⁴ = 84387881251 is a prime.

It is not a weakly prime, because it can be changed into another prime (84387883267) 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, 42193940633 + 42193940634.

It is an arithmetic number, because the mean of its divisors is an integer number (42193940634).

Almost surely, 2^84387881267 is an apocalyptic number.

84387881267 is a deficient number, since it is larger than the sum of its proper divisors (1).

84387881267 is an equidigital number, since it uses as much as digits as its factorization.

84387881267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28901376, while the sum is 62.

The spelling of 84387881267 in words is "eighty-four billion, three hundred eighty-seven million, eight hundred eighty-one thousand, two hundred sixty-seven".