732721766401 has 4 divisors (see below), whose sum is σ = 732983175472. Its totient is φ = 732460357332.

The previous prime is 732721766333. The next prime is 732721766411. The reversal of 732721766401 is 104667127237.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104667127237 = 219433 ⋅476989.

It is a cyclic number.

It is not a de Polignac number, because 732721766401 - 2¹⁷ = 732721635329 is a prime.

It is a super-2 number, since 2×732721766401² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (732721766411) 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 3 ways as a sum of consecutive naturals, for example, 130700331 + ... + 130705936.

It is an arithmetic number, because the mean of its divisors is an integer number (183245793868).

Almost surely, 2^732721766401 is an apocalyptic number.

It is an amenable number.

732721766401 is a deficient number, since it is larger than the sum of its proper divisors (261409071).

732721766401 is a wasteful number, since it uses less digits than its factorization.

732721766401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261409070.

The product of its (nonzero) digits is 592704, while the sum is 46.

The spelling of 732721766401 in words is "seven hundred thirty-two billion, seven hundred twenty-one million, seven hundred sixty-six thousand, four hundred one".