451540501656641 has 2 divisors, whose sum is σ = 451540501656642. Its totient is φ = 451540501656640.

The previous prime is 451540501656619. The next prime is 451540501656649. The reversal of 451540501656641 is 146656105045154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 357795988926016 + 93744512730625 = 18915496^2 + 9682175^2 .

It is a cyclic number.

It is not a de Polignac number, because 451540501656641 - 2¹⁴ = 451540501640257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (451540501656649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225770250828320 + 225770250828321.

It is an arithmetic number, because the mean of its divisors is an integer number (225770250828321).

Almost surely, 2^{451540501656641} is an apocalyptic number.

It is an amenable number.

451540501656641 is a deficient number, since it is larger than the sum of its proper divisors (1).

451540501656641 is an equidigital number, since it uses as much as digits as its factorization.

451540501656641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640000, while the sum is 53.

The spelling of 451540501656641 in words is "four hundred fifty-one trillion, five hundred forty billion, five hundred one million, six hundred fifty-six thousand, six hundred forty-one".