445718406572993 has 2 divisors, whose sum is σ = 445718406572994. Its totient is φ = 445718406572992.

The previous prime is 445718406572963. The next prime is 445718406573107. The reversal of 445718406572993 is 399275604817544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 307130111416384 + 138588295156609 = 17525128^2 + 11772353^2 .

It is a cyclic number.

It is not a de Polignac number, because 445718406572993 - 2⁸ = 445718406572737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445718406572993.

It is not a weakly prime, because it can be changed into another prime (445718406572963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222859203286496 + 222859203286497.

It is an arithmetic number, because the mean of its divisors is an integer number (222859203286497).

It is a 1-persistent number, because it is pandigital, but 2⋅445718406572993 = 891436813145986 is not.

Almost surely, 2^{445718406572993} is an apocalyptic number.

It is an amenable number.

445718406572993 is a deficient number, since it is larger than the sum of its proper divisors (1).

445718406572993 is an equidigital number, since it uses as much as digits as its factorization.

445718406572993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1828915200, while the sum is 74.

The spelling of 445718406572993 in words is "four hundred forty-five trillion, seven hundred eighteen billion, four hundred six million, five hundred seventy-two thousand, nine hundred ninety-three".