451661277653 has 2 divisors, whose sum is σ = 451661277654. Its totient is φ = 451661277652.

The previous prime is 451661277637. The next prime is 451661277673. The reversal of 451661277653 is 356772166154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244037976004 + 207623301649 = 494002^2 + 455657^2 .

It is a cyclic number.

It is not a de Polignac number, because 451661277653 - 2⁴ = 451661277637 is a prime.

It is a super-2 number, since 2×451661277653² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 451661277595 and 451661277604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451661277673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225830638826 + 225830638827.

It is an arithmetic number, because the mean of its divisors is an integer number (225830638827).

Almost surely, 2^451661277653 is an apocalyptic number.

It is an amenable number.

451661277653 is a deficient number, since it is larger than the sum of its proper divisors (1).

451661277653 is an equidigital number, since it uses as much as digits as its factorization.

451661277653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 53.

The spelling of 451661277653 in words is "four hundred fifty-one billion, six hundred sixty-one million, two hundred seventy-seven thousand, six hundred fifty-three".