45185869447 has 2 divisors, whose sum is σ = 45185869448. Its totient is φ = 45185869446.

The previous prime is 45185869363. The next prime is 45185869459. The reversal of 45185869447 is 74496858154.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45185869447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45185869247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22592934723 + 22592934724.

It is an arithmetic number, because the mean of its divisors is an integer number (22592934724).

Almost surely, 2^45185869447 is an apocalyptic number.

45185869447 is a deficient number, since it is larger than the sum of its proper divisors (1).

45185869447 is an equidigital number, since it uses as much as digits as its factorization.

45185869447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38707200, while the sum is 61.

The spelling of 45185869447 in words is "forty-five billion, one hundred eighty-five million, eight hundred sixty-nine thousand, four hundred forty-seven".