451444025540 has 12 divisors (see below), whose sum is σ = 948032453676. Its totient is φ = 180577610208.

The previous prime is 451444025537. The next prime is 451444025573. The reversal of 451444025540 is 45520444154.

It can be written as a sum of positive squares in 2 ways, for example, as 110479123456 + 340964902084 = 332384^2 + 583922^2 .

It is a junction number, because it is equal to n+sod(n) for n = 451444025494 and 451444025503.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11286100619 + ... + 11286100658.

It is an arithmetic number, because the mean of its divisors is an integer number (79002704473).

Almost surely, 2^451444025540 is an apocalyptic number.

It is an amenable number.

451444025540 is an abundant number, since it is smaller than the sum of its proper divisors (496588428136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451444025540 is a wasteful number, since it uses less digits than its factorization.

451444025540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22572201286 (or 22572201284 counting only the distinct ones).

The product of its (nonzero) digits is 256000, while the sum is 38.

Adding to 451444025540 its reverse (45520444154), we get a palindrome (496964469694).

The spelling of 451444025540 in words is "four hundred fifty-one billion, four hundred forty-four million, twenty-five thousand, five hundred forty".