321225656463 has 24 divisors (see below), whose sum is σ = 477404401968. Its totient is φ = 207981551232.

The previous prime is 321225656459. The next prime is 321225656573. The reversal of 321225656463 is 364656522123.

321225656463 is a `hidden beast` number, since 3 + 2 + 1 + 2 + 25 + 6 + 564 + 63 = 666.

It is not a de Polignac number, because 321225656463 - 2² = 321225656459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321225656413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 699606 + ... + 1063907.

It is an arithmetic number, because the mean of its divisors is an integer number (19891850082).

Almost surely, 2^321225656463 is an apocalyptic number.

321225656463 is a deficient number, since it is larger than the sum of its proper divisors (156178745505).

321225656463 is a wasteful number, since it uses less digits than its factorization.

321225656463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1764103 (or 1764100 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 321225656463 in words is "three hundred twenty-one billion, two hundred twenty-five million, six hundred fifty-six thousand, four hundred sixty-three".