728126000066 has 16 divisors (see below), whose sum is σ = 1127544345600. Its totient is φ = 352280456640.

The previous prime is 728126000051. The next prime is 728126000087. The reversal of 728126000066 is 660000621827.

It is a happy number.

It is a super-2 number, since 2×728126000066² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 728125999993 and 728126000029.

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, 67991 + ... + 1208666.

It is an arithmetic number, because the mean of its divisors is an integer number (70471521600).

Almost surely, 2^728126000066 is an apocalyptic number.

728126000066 is a deficient number, since it is larger than the sum of its proper divisors (399418345534).

728126000066 is a wasteful number, since it uses less digits than its factorization.

728126000066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285889.

The product of its (nonzero) digits is 48384, while the sum is 38.

The spelling of 728126000066 in words is "seven hundred twenty-eight billion, one hundred twenty-six million, sixty-six", and thus it is an aban number.