84066602553 has 6 divisors (see below), whose sum is σ = 121429537034. Its totient is φ = 56044401696.

The previous prime is 84066602549. The next prime is 84066602569. The reversal of 84066602553 is 35520666048.

It can be written as a sum of positive squares in only one way, i.e., 84046648464 + 19954089 = 289908^2 + 4467^2 .

It is not a de Polignac number, because 84066602553 - 2² = 84066602549 is a prime.

It is a super-2 number, since 2×84066602553² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84066602499 and 84066602508.

It is not an unprimeable number, because it can be changed into a prime (84066603553) 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 in 5 ways as a sum of consecutive naturals, for example, 4670366800 + ... + 4670366817.

Almost surely, 2^84066602553 is an apocalyptic number.

It is an amenable number.

84066602553 is a deficient number, since it is larger than the sum of its proper divisors (37362934481).

84066602553 is a wasteful number, since it uses less digits than its factorization.

84066602553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340733623 (or 9340733620 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 84066602553 in words is "eighty-four billion, sixty-six million, six hundred two thousand, five hundred fifty-three".