321461504556 has 24 divisors (see below), whose sum is σ = 794199011760. Its totient is φ = 100850668032.

The previous prime is 321461504537. The next prime is 321461504557. The reversal of 321461504556 is 655405164123.

It is a super-2 number, since 2×321461504556² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321461504557) 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 7 ways as a sum of consecutive naturals, for example, 787895641 + ... + 787896048.

It is an arithmetic number, because the mean of its divisors is an integer number (33091625490).

Almost surely, 2^321461504556 is an apocalyptic number.

It is an amenable number.

321461504556 is an abundant number, since it is smaller than the sum of its proper divisors (472737507204).

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

321461504556 is a wasteful number, since it uses less digits than its factorization.

321461504556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575791713 (or 1575791711 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

Adding to 321461504556 its reverse (655405164123), we get a palindrome (976866668679).

The spelling of 321461504556 in words is "three hundred twenty-one billion, four hundred sixty-one million, five hundred four thousand, five hundred fifty-six".