451242454261 has 2 divisors, whose sum is σ = 451242454262. Its totient is φ = 451242454260.

The previous prime is 451242454217. The next prime is 451242454291. The reversal of 451242454261 is 162454242154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403836101361 + 47406352900 = 635481^2 + 217730^2 .

It is a cyclic number.

It is not a de Polignac number, because 451242454261 - 2¹³ = 451242446069 is a prime.

It is a super-2 number, since 2×451242454261² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451242454211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225621227130 + 225621227131.

It is an arithmetic number, because the mean of its divisors is an integer number (225621227131).

Almost surely, 2^451242454261 is an apocalyptic number.

It is an amenable number.

451242454261 is a deficient number, since it is larger than the sum of its proper divisors (1).

451242454261 is an equidigital number, since it uses as much as digits as its factorization.

451242454261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 307200, while the sum is 40.

The spelling of 451242454261 in words is "four hundred fifty-one billion, two hundred forty-two million, four hundred fifty-four thousand, two hundred sixty-one".