445746431165437 has 2 divisors, whose sum is σ = 445746431165438. Its totient is φ = 445746431165436.

The previous prime is 445746431165381. The next prime is 445746431165461. The reversal of 445746431165437 is 734561134647544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 233209366185636 + 212537064979801 = 15271194^2 + 14578651^2 .

It is a cyclic number.

It is not a de Polignac number, because 445746431165437 - 2²³ = 445746422776829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445746431163437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222873215582718 + 222873215582719.

It is an arithmetic number, because the mean of its divisors is an integer number (222873215582719).

Almost surely, 2^{445746431165437} is an apocalyptic number.

It is an amenable number.

445746431165437 is a deficient number, since it is larger than the sum of its proper divisors (1).

445746431165437 is an equidigital number, since it uses as much as digits as its factorization.

445746431165437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 406425600, while the sum is 64.

The spelling of 445746431165437 in words is "four hundred forty-five trillion, seven hundred forty-six billion, four hundred thirty-one million, one hundred sixty-five thousand, four hundred thirty-seven".