450488026421 has 2 divisors, whose sum is σ = 450488026422. Its totient is φ = 450488026420.

The previous prime is 450488026411. The next prime is 450488026463. The reversal of 450488026421 is 124620884054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239659202500 + 210828823921 = 489550^2 + 459161^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-450488026421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (450488026411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225244013210 + 225244013211.

It is an arithmetic number, because the mean of its divisors is an integer number (225244013211).

Almost surely, 2^450488026421 is an apocalyptic number.

It is an amenable number.

450488026421 is a deficient number, since it is larger than the sum of its proper divisors (1).

450488026421 is an equidigital number, since it uses as much as digits as its factorization.

450488026421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 491520, while the sum is 44.

The spelling of 450488026421 in words is "four hundred fifty billion, four hundred eighty-eight million, twenty-six thousand, four hundred twenty-one".