451216605349 has 2 divisors, whose sum is σ = 451216605350. Its totient is φ = 451216605348.

The previous prime is 451216605341. The next prime is 451216605409. The reversal of 451216605349 is 943506612154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444495557025 + 6721048324 = 666705^2 + 81982^2 .

It is a cyclic number.

It is not a de Polignac number, because 451216605349 - 2³ = 451216605341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 451216605299 and 451216605308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451216605341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225608302674 + 225608302675.

It is an arithmetic number, because the mean of its divisors is an integer number (225608302675).

Almost surely, 2^451216605349 is an apocalyptic number.

It is an amenable number.

451216605349 is a deficient number, since it is larger than the sum of its proper divisors (1).

451216605349 is an equidigital number, since it uses as much as digits as its factorization.

451216605349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 46.

The spelling of 451216605349 in words is "four hundred fifty-one billion, two hundred sixteen million, six hundred five thousand, three hundred forty-nine".