45669653681 has 2 divisors, whose sum is σ = 45669653682. Its totient is φ = 45669653680.

The previous prime is 45669653569. The next prime is 45669653683. The reversal of 45669653681 is 18635696654.

It is a happy number.

45669653681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32509893025 + 13159760656 = 180305^2 + 114716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45669653681 is a prime.

It is a super-2 number, since 2×45669653681² (a number of 22 digits) contains 22 as substring.

Together with 45669653683, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 45669653681.

It is not a weakly prime, because it can be changed into another prime (45669653683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22834826840 + 22834826841.

It is an arithmetic number, because the mean of its divisors is an integer number (22834826841).

Almost surely, 2^45669653681 is an apocalyptic number.

It is an amenable number.

45669653681 is a deficient number, since it is larger than the sum of its proper divisors (1).

45669653681 is an equidigital number, since it uses as much as digits as its factorization.

45669653681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27993600, while the sum is 59.

The spelling of 45669653681 in words is "forty-five billion, six hundred sixty-nine million, six hundred fifty-three thousand, six hundred eighty-one".