84856145147 has 2 divisors, whose sum is σ = 84856145148. Its totient is φ = 84856145146.

The previous prime is 84856145141. The next prime is 84856145149. The reversal of 84856145147 is 74154165848.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84856145147 - 2²⁴ = 84839367931 is a prime.

It is a super-3 number, since 3×84856145147³ (a number of 34 digits) contains 333 as substring.

Together with 84856145149, 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 (84856145141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42428072573 + 42428072574.

It is an arithmetic number, because the mean of its divisors is an integer number (42428072574).

Almost surely, 2^84856145147 is an apocalyptic number.

84856145147 is a deficient number, since it is larger than the sum of its proper divisors (1).

84856145147 is an equidigital number, since it uses as much as digits as its factorization.

84856145147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4300800, while the sum is 53.

The spelling of 84856145147 in words is "eighty-four billion, eight hundred fifty-six million, one hundred forty-five thousand, one hundred forty-seven".