45378857243 has 2 divisors, whose sum is σ = 45378857244. Its totient is φ = 45378857242.

The previous prime is 45378857203. The next prime is 45378857257. The reversal of 45378857243 is 34275887354.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 45378857243 - 2⁶ = 45378857179 is a prime.

It is a super-2 number, since 2×45378857243² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45378857203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22689428621 + 22689428622.

It is an arithmetic number, because the mean of its divisors is an integer number (22689428622).

Almost surely, 2^45378857243 is an apocalyptic number.

45378857243 is a deficient number, since it is larger than the sum of its proper divisors (1).

45378857243 is an equidigital number, since it uses as much as digits as its factorization.

45378857243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22579200, while the sum is 56.

The spelling of 45378857243 in words is "forty-five billion, three hundred seventy-eight million, eight hundred fifty-seven thousand, two hundred forty-three".