84274668553 has 2 divisors, whose sum is σ = 84274668554. Its totient is φ = 84274668552.

The previous prime is 84274668487. The next prime is 84274668557. The reversal of 84274668553 is 35586647248.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78107393529 + 6167275024 = 279477^2 + 78532^2 .

It is a cyclic number.

It is not a de Polignac number, because 84274668553 - 2¹⁷ = 84274537481 is a prime.

It is a super-2 number, since 2×84274668553² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (84274668557) 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, 42137334276 + 42137334277.

It is an arithmetic number, because the mean of its divisors is an integer number (42137334277).

Almost surely, 2^84274668553 is an apocalyptic number.

It is an amenable number.

84274668553 is a deficient number, since it is larger than the sum of its proper divisors (1).

84274668553 is an equidigital number, since it uses as much as digits as its factorization.

84274668553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38707200, while the sum is 58.

The spelling of 84274668553 in words is "eighty-four billion, two hundred seventy-four million, six hundred sixty-eight thousand, five hundred fifty-three".