84884288857 has 2 divisors, whose sum is σ = 84884288858. Its totient is φ = 84884288856.

The previous prime is 84884288767. The next prime is 84884288873. The reversal of 84884288857 is 75888248848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81054659401 + 3829629456 = 284701^2 + 61884^2 .

It is a cyclic number.

It is not a de Polignac number, because 84884288857 - 2⁷ = 84884288729 is a prime.

It is a super-2 number, since 2×84884288857² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84884288887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42442144428 + 42442144429.

It is an arithmetic number, because the mean of its divisors is an integer number (42442144429).

Almost surely, 2^84884288857 is an apocalyptic number.

It is an amenable number.

84884288857 is a deficient number, since it is larger than the sum of its proper divisors (1).

84884288857 is an equidigital number, since it uses as much as digits as its factorization.

84884288857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 293601280, while the sum is 70.

The spelling of 84884288857 in words is "eighty-four billion, eight hundred eighty-four million, two hundred eighty-eight thousand, eight hundred fifty-seven".