72728201075 has 18 divisors (see below), whose sum is σ = 95799911196. Its totient is φ = 54760051840.

The previous prime is 72728201069. The next prime is 72728201081. The reversal of 72728201075 is 57010282727.

It is an interprime number because it is at equal distance from previous prime (72728201069) and next prime (72728201081).

It is not a de Polignac number, because 72728201075 - 2⁸ = 72728200819 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5025869 + ... + 5040318.

Almost surely, 2^72728201075 is an apocalyptic number.

72728201075 is a deficient number, since it is larger than the sum of its proper divisors (23071710121).

72728201075 is a wasteful number, since it uses less digits than its factorization.

72728201075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10066231 (or 10066209 counting only the distinct ones).

The product of its (nonzero) digits is 109760, while the sum is 41.

The spelling of 72728201075 in words is "seventy-two billion, seven hundred twenty-eight million, two hundred one thousand, seventy-five".