84591277019 has 2 divisors, whose sum is σ = 84591277020. Its totient is φ = 84591277018.

The previous prime is 84591276971. The next prime is 84591277021. The reversal of 84591277019 is 91077219548.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84591277019 - 2²⁸ = 84322841563 is a prime.

It is a super-2 number, since 2×84591277019² (a number of 23 digits) contains 22 as substring.

Together with 84591277021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84591277319) 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, 42295638509 + 42295638510.

It is an arithmetic number, because the mean of its divisors is an integer number (42295638510).

Almost surely, 2^84591277019 is an apocalyptic number.

84591277019 is a deficient number, since it is larger than the sum of its proper divisors (1).

84591277019 is an equidigital number, since it uses as much as digits as its factorization.

84591277019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 53.

The spelling of 84591277019 in words is "eighty-four billion, five hundred ninety-one million, two hundred seventy-seven thousand, nineteen".