730561968440 has 32 divisors (see below), whose sum is σ = 1647032395680. Its totient is φ = 291643815552.

The previous prime is 730561968431. The next prime is 730561968457. The reversal of 730561968440 is 44869165037.

It is a super-3 number, since 3×730561968440³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18134999 + ... + 18175238.

It is an arithmetic number, because the mean of its divisors is an integer number (51469762365).

Almost surely, 2^730561968440 is an apocalyptic number.

It is an amenable number.

730561968440 is an abundant number, since it is smaller than the sum of its proper divisors (916470427240).

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

730561968440 is a wasteful number, since it uses less digits than its factorization.

730561968440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36310751 (or 36310747 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 730561968440 in words is "seven hundred thirty billion, five hundred sixty-one million, nine hundred sixty-eight thousand, four hundred forty".