45845352781 has 2 divisors, whose sum is σ = 45845352782. Its totient is φ = 45845352780.

The previous prime is 45845352727. The next prime is 45845352797. The reversal of 45845352781 is 18725354854.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39564790281 + 6280562500 = 198909^2 + 79250^2 .

It is a cyclic number.

It is not a de Polignac number, because 45845352781 - 2¹⁵ = 45845320013 is a prime.

It is a super-2 number, since 2×45845352781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45845352281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22922676390 + 22922676391.

It is an arithmetic number, because the mean of its divisors is an integer number (22922676391).

Almost surely, 2^45845352781 is an apocalyptic number.

It is an amenable number.

45845352781 is a deficient number, since it is larger than the sum of its proper divisors (1).

45845352781 is an equidigital number, since it uses as much as digits as its factorization.

45845352781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376000, while the sum is 52.

The spelling of 45845352781 in words is "forty-five billion, eight hundred forty-five million, three hundred fifty-two thousand, seven hundred eighty-one".