43445454413 has 2 divisors, whose sum is σ = 43445454414. Its totient is φ = 43445454412.

The previous prime is 43445454407. The next prime is 43445454491. The reversal of 43445454413 is 31445454434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28010373769 + 15435080644 = 167363^2 + 124238^2 .

It is a cyclic number.

It is not a de Polignac number, because 43445454413 - 2²⁸ = 43177018957 is a prime.

It is a super-2 number, since 2×43445454413² (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 (43445454713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21722727206 + 21722727207.

It is an arithmetic number, because the mean of its divisors is an integer number (21722727207).

Almost surely, 2^43445454413 is an apocalyptic number.

It is an amenable number.

43445454413 is a deficient number, since it is larger than the sum of its proper divisors (1).

43445454413 is an equidigital number, since it uses as much as digits as its factorization.

43445454413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 921600, while the sum is 41.

The spelling of 43445454413 in words is "forty-three billion, four hundred forty-five million, four hundred fifty-four thousand, four hundred thirteen".