43450645331 has 2 divisors, whose sum is σ = 43450645332. Its totient is φ = 43450645330.

The previous prime is 43450645241. The next prime is 43450645361. The reversal of 43450645331 is 13354605434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43450645331 - 2³⁰ = 42376903507 is a prime.

It is a super-2 number, since 2×43450645331² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43450645361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21725322665 + 21725322666.

It is an arithmetic number, because the mean of its divisors is an integer number (21725322666).

Almost surely, 2^43450645331 is an apocalyptic number.

43450645331 is a deficient number, since it is larger than the sum of its proper divisors (1).

43450645331 is an equidigital number, since it uses as much as digits as its factorization.

43450645331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 43450645331 in words is "forty-three billion, four hundred fifty million, six hundred forty-five thousand, three hundred thirty-one".