445747256855869 has 2 divisors, whose sum is σ = 445747256855870. Its totient is φ = 445747256855868.

The previous prime is 445747256855827. The next prime is 445747256855899. The reversal of 445747256855869 is 968558652747544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278498088580644 + 167249168275225 = 16688262^2 + 12932485^2 .

It is a cyclic number.

It is not a de Polignac number, because 445747256855869 - 2²⁷ = 445747122638141 is a prime.

It is a super-2 number, since 2×445747256855869² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445747256855819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222873628427934 + 222873628427935.

It is an arithmetic number, because the mean of its divisors is an integer number (222873628427935).

Almost surely, 2^{445747256855869} is an apocalyptic number.

It is an amenable number.

445747256855869 is a deficient number, since it is larger than the sum of its proper divisors (1).

445747256855869 is an equidigital number, since it uses as much as digits as its factorization.

445747256855869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120000, while the sum is 85.

The spelling of 445747256855869 in words is "four hundred forty-five trillion, seven hundred forty-seven billion, two hundred fifty-six million, eight hundred fifty-five thousand, eight hundred sixty-nine".