45244678861 has 2 divisors, whose sum is σ = 45244678862. Its totient is φ = 45244678860.

The previous prime is 45244678859. The next prime is 45244678903. The reversal of 45244678861 is 16887644254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29380016836 + 15864662025 = 171406^2 + 125955^2 .

It is a cyclic number.

It is not a de Polignac number, because 45244678861 - 2¹ = 45244678859 is a prime.

Together with 45244678859, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45244678261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22622339430 + 22622339431.

It is an arithmetic number, because the mean of its divisors is an integer number (22622339431).

Almost surely, 2^45244678861 is an apocalyptic number.

It is an amenable number.

45244678861 is a deficient number, since it is larger than the sum of its proper divisors (1).

45244678861 is an equidigital number, since it uses as much as digits as its factorization.

45244678861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10321920, while the sum is 55.

The spelling of 45244678861 in words is "forty-five billion, two hundred forty-four million, six hundred seventy-eight thousand, eight hundred sixty-one".