321400144422544 has 40 divisors (see below), whose sum is σ = 680983969191840. Its totient is φ = 145733784057600.

The previous prime is 321400144422523. The next prime is 321400144422593. The reversal of 321400144422544 is 445224441004123.

It is a junction number, because it is equal to n+sod(n) for n = 321400144422497 and 321400144422506.

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, 2232369562 + ... + 2232513529.

It is an arithmetic number, because the mean of its divisors is an integer number (17024599229796).

Almost surely, 2^{321400144422544} is an apocalyptic number.

It is an amenable number.

321400144422544 is an abundant number, since it is smaller than the sum of its proper divisors (359583824769296).

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

321400144422544 is a wasteful number, since it uses less digits than its factorization.

321400144422544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464883519 (or 4464883513 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 40.

Adding to 321400144422544 its reverse (445224441004123), we get a palindrome (766624585426667).

The spelling of 321400144422544 in words is "three hundred twenty-one trillion, four hundred billion, one hundred forty-four million, four hundred twenty-two thousand, five hundred forty-four".