721543027652332 has 24 divisors (see below), whose sum is σ = 1360103547220992. Its totient is φ = 333953995966800.

The previous prime is 721543027652327. The next prime is 721543027652341. The reversal of 721543027652332 is 233256720345127.

It is a self number, because there is not a number n which added to its sum of digits gives 721543027652332.

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, 126497722894 + ... + 126497728597.

It is an arithmetic number, because the mean of its divisors is an integer number (56670981134208).

Almost surely, 2^{721543027652332} is an apocalyptic number.

It is an amenable number.

721543027652332 is a deficient number, since it is larger than the sum of its proper divisors (638560519568660).

721543027652332 is a wasteful number, since it uses less digits than its factorization.

721543027652332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252995451549 (or 252995451547 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 52.

Adding to 721543027652332 its reverse (233256720345127), we get a palindrome (954799747997459).

The spelling of 721543027652332 in words is "seven hundred twenty-one trillion, five hundred forty-three billion, twenty-seven million, six hundred fifty-two thousand, three hundred thirty-two".