84878564227 has 2 divisors, whose sum is σ = 84878564228. Its totient is φ = 84878564226.

The previous prime is 84878564143. The next prime is 84878564263. The reversal of 84878564227 is 72246587848.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84878564227 - 2³⁵ = 50518825859 is a prime.

It is not a weakly prime, because it can be changed into another prime (84878564627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42439282113 + 42439282114.

It is an arithmetic number, because the mean of its divisors is an integer number (42439282114).

Almost surely, 2^84878564227 is an apocalyptic number.

84878564227 is a deficient number, since it is larger than the sum of its proper divisors (1).

84878564227 is an equidigital number, since it uses as much as digits as its factorization.

84878564227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48168960, while the sum is 61.

The spelling of 84878564227 in words is "eighty-four billion, eight hundred seventy-eight million, five hundred sixty-four thousand, two hundred twenty-seven".