451816214893 has 2 divisors, whose sum is σ = 451816214894. Its totient is φ = 451816214892.

The previous prime is 451816214803. The next prime is 451816214917. The reversal of 451816214893 is 398412618154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447725589129 + 4090625764 = 669123^2 + 63958^2 .

It is a cyclic number.

It is not a de Polignac number, because 451816214893 - 2³⁷ = 314377261421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451816214893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451816214803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225908107446 + 225908107447.

It is an arithmetic number, because the mean of its divisors is an integer number (225908107447).

Almost surely, 2^451816214893 is an apocalyptic number.

It is an amenable number.

451816214893 is a deficient number, since it is larger than the sum of its proper divisors (1).

451816214893 is an equidigital number, since it uses as much as digits as its factorization.

451816214893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1658880, while the sum is 52.

The spelling of 451816214893 in words is "four hundred fifty-one billion, eight hundred sixteen million, two hundred fourteen thousand, eight hundred ninety-three".