64531440122 has 16 divisors (see below), whose sum is σ = 102498196392. Its totient is φ = 30365637120.

The previous prime is 64531440119. The next prime is 64531440137. The reversal of 64531440122 is 22104413546.

It can be written as a sum of positive squares in 4 ways, for example, as 64530732841 + 707281 = 254029^2 + 841^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505472 + ... + 620132.

Almost surely, 2^64531440122 is an apocalyptic number.

64531440122 is a deficient number, since it is larger than the sum of its proper divisors (37966756270).

64531440122 is a wasteful number, since it uses less digits than its factorization.

64531440122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131233.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 64531440122 its reverse (22104413546), we get a palindrome (86635853668).

The spelling of 64531440122 in words is "sixty-four billion, five hundred thirty-one million, four hundred forty thousand, one hundred twenty-two".