451837543901881 has 2 divisors, whose sum is σ = 451837543901882. Its totient is φ = 451837543901880.

The previous prime is 451837543901839. The next prime is 451837543901957. The reversal of 451837543901881 is 188109345738154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375908697373225 + 75928846528656 = 19388365^2 + 8713716^2 .

It is a cyclic number.

It is not a de Polignac number, because 451837543901881 - 2⁷ = 451837543901753 is a prime.

It is a super-2 number, since 2×451837543901881² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (451837543901801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225918771950940 + 225918771950941.

It is an arithmetic number, because the mean of its divisors is an integer number (225918771950941).

Almost surely, 2^{451837543901881} is an apocalyptic number.

It is an amenable number.

451837543901881 is a deficient number, since it is larger than the sum of its proper divisors (1).

451837543901881 is an equidigital number, since it uses as much as digits as its factorization.

451837543901881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116121600, while the sum is 67.

The spelling of 451837543901881 in words is "four hundred fifty-one trillion, eight hundred thirty-seven billion, five hundred forty-three million, nine hundred one thousand, eight hundred eighty-one".