84633122561 has 4 divisors (see below), whose sum is σ = 91143362772. Its totient is φ = 78122882352.

The previous prime is 84633122551. The next prime is 84633122569. The reversal of 84633122561 is 16522133648.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32896890625 + 51736231936 = 181375^2 + 227456^2 .

It is a cyclic number.

It is not a de Polignac number, because 84633122561 - 2¹⁰ = 84633121537 is a prime.

It is a super-3 number, since 3×84633122561³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84633122569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3255120086 + ... + 3255120111.

It is an arithmetic number, because the mean of its divisors is an integer number (22785840693).

Almost surely, 2^84633122561 is an apocalyptic number.

It is an amenable number.

84633122561 is a deficient number, since it is larger than the sum of its proper divisors (6510240211).

84633122561 is a wasteful number, since it uses less digits than its factorization.

84633122561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6510240210.

The product of its digits is 207360, while the sum is 41.

The spelling of 84633122561 in words is "eighty-four billion, six hundred thirty-three million, one hundred twenty-two thousand, five hundred sixty-one".