450781909369873 has 2 divisors, whose sum is σ = 450781909369874. Its totient is φ = 450781909369872.

The previous prime is 450781909369739. The next prime is 450781909369943. The reversal of 450781909369873 is 378963909187054.

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., 447297627945744 + 3484281424129 = 21149412^2 + 1866623^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450781909369873 is a prime.

It is a super-2 number, since 2×450781909369873² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 450781909369793 and 450781909369802.

It is not a weakly prime, because it can be changed into another prime (450781909369373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225390954684936 + 225390954684937.

It is an arithmetic number, because the mean of its divisors is an integer number (225390954684937).

Almost surely, 2^{450781909369873} is an apocalyptic number.

It is an amenable number.

450781909369873 is a deficient number, since it is larger than the sum of its proper divisors (1).

450781909369873 is an equidigital number, since it uses as much as digits as its factorization.

450781909369873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2469035520, while the sum is 79.

The spelling of 450781909369873 in words is "four hundred fifty trillion, seven hundred eighty-one billion, nine hundred nine million, three hundred sixty-nine thousand, eight hundred seventy-three".