84687782407 has 2 divisors, whose sum is σ = 84687782408. Its totient is φ = 84687782406.

The previous prime is 84687782383. The next prime is 84687782423. The reversal of 84687782407 is 70428778648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84687782407 - 2²⁷ = 84553564679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84687785407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42343891203 + 42343891204.

It is an arithmetic number, because the mean of its divisors is an integer number (42343891204).

Almost surely, 2^84687782407 is an apocalyptic number.

84687782407 is a deficient number, since it is larger than the sum of its proper divisors (1).

84687782407 is an equidigital number, since it uses as much as digits as its factorization.

84687782407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33718272, while the sum is 61.

The spelling of 84687782407 in words is "eighty-four billion, six hundred eighty-seven million, seven hundred eighty-two thousand, four hundred seven".