451082121881 has 4 divisors (see below), whose sum is σ = 451084416564. Its totient is φ = 451079827200.

The previous prime is 451082121823. The next prime is 451082121899. The reversal of 451082121881 is 188121280154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 167355446281 + 283726675600 = 409091^2 + 532660^2 .

It is a cyclic number.

It is not a de Polignac number, because 451082121881 - 2¹⁴ = 451082105497 is a prime.

It is a super-2 number, since 2×451082121881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (451082121181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821660 + ... + 1255901.

It is an arithmetic number, because the mean of its divisors is an integer number (112771104141).

Almost surely, 2^451082121881 is an apocalyptic number.

It is an amenable number.

451082121881 is a deficient number, since it is larger than the sum of its proper divisors (2294683).

451082121881 is a wasteful number, since it uses less digits than its factorization.

451082121881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294682.

The product of its (nonzero) digits is 40960, while the sum is 41.

The spelling of 451082121881 in words is "four hundred fifty-one billion, eighty-two million, one hundred twenty-one thousand, eight hundred eighty-one".