321440035020452 has 24 divisors (see below), whose sum is σ = 563404748183424. Its totient is φ = 160467263283392.

The previous prime is 321440035020427. The next prime is 321440035020469. The reversal of 321440035020452 is 254020530044123.

It is a happy number.

It is a super-2 number, since 2×321440035020452² (a number of 30 digits) contains 22 as substring.

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, 94964873 + ... + 98291439.

It is an arithmetic number, because the mean of its divisors is an integer number (23475197840976).

Almost surely, 2^{321440035020452} is an apocalyptic number.

It is an amenable number.

321440035020452 is a deficient number, since it is larger than the sum of its proper divisors (241964713162972).

321440035020452 is a wasteful number, since it uses less digits than its factorization.

321440035020452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3364555 (or 3364553 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 321440035020452 its reverse (254020530044123), we get a palindrome (575460565064575).

The spelling of 321440035020452 in words is "three hundred twenty-one trillion, four hundred forty billion, thirty-five million, twenty thousand, four hundred fifty-two".