728445066741 has 48 divisors (see below), whose sum is σ = 1271235738240. Its totient is φ = 392653578240.

The previous prime is 728445066737. The next prime is 728445066757. The reversal of 728445066741 is 147660544827.

728445066741 is a `hidden beast` number, since 7 + 28 + 44 + 506 + 6 + 74 + 1 = 666.

It is not a de Polignac number, because 728445066741 - 2² = 728445066737 is a prime.

It is a super-2 number, since 2×728445066741² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728445026741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1027020 + ... + 1584821.

It is an arithmetic number, because the mean of its divisors is an integer number (26484077880).

Almost surely, 2^728445066741 is an apocalyptic number.

It is an amenable number.

728445066741 is a deficient number, since it is larger than the sum of its proper divisors (542790671499).

728445066741 is a wasteful number, since it uses less digits than its factorization.

728445066741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612106 (or 2612103 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

The spelling of 728445066741 in words is "seven hundred twenty-eight billion, four hundred forty-five million, sixty-six thousand, seven hundred forty-one".