431224520001644 has 6 divisors (see below), whose sum is σ = 754642910002884. Its totient is φ = 215612260000820.

The previous prime is 431224520001623. The next prime is 431224520001659. The reversal of 431224520001644 is 446100025422134.

It is a junction number, because it is equal to n+sod(n) for n = 431224520001598 and 431224520001607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53903065000202 + ... + 53903065000209.

It is an arithmetic number, because the mean of its divisors is an integer number (125773818333814).

Almost surely, 2^{431224520001644} is an apocalyptic number.

It is an amenable number.

431224520001644 is a deficient number, since it is larger than the sum of its proper divisors (323418390001240).

431224520001644 is a wasteful number, since it uses less digits than its factorization.

431224520001644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107806130000415 (or 107806130000413 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 38.

Adding to 431224520001644 its reverse (446100025422134), we get a palindrome (877324545423778).

The spelling of 431224520001644 in words is "four hundred thirty-one trillion, two hundred twenty-four billion, five hundred twenty million, one thousand, six hundred forty-four".