77283022081 has 4 divisors (see below), whose sum is σ = 77283611092. Its totient is φ = 77282433072.

The previous prime is 77283022067. The next prime is 77283022123. The reversal of 77283022081 is 18022038277.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33785748481 + 43497273600 = 183809^2 + 208560^2 .

It is a cyclic number.

It is not a de Polignac number, because 77283022081 - 2⁵ = 77283022049 is a prime.

It is a super-2 number, since 2×77283022081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77283022381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1435 + ... + 393151.

It is an arithmetic number, because the mean of its divisors is an integer number (19320902773).

Almost surely, 2^77283022081 is an apocalyptic number.

It is an amenable number.

77283022081 is a deficient number, since it is larger than the sum of its proper divisors (589011).

77283022081 is a wasteful number, since it uses less digits than its factorization.

77283022081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589010.

The product of its (nonzero) digits is 75264, while the sum is 40.

The spelling of 77283022081 in words is "seventy-seven billion, two hundred eighty-three million, twenty-two thousand, eighty-one".