36003121728 has 112 divisors (see below), whose sum is σ = 111809076864. Its totient is φ = 10008576000.

The previous prime is 36003121723. The next prime is 36003121729. The reversal of 36003121728 is 82712130063.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×36003121728² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36003121723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312273 + ... + 411728.

Almost surely, 2^36003121728 is an apocalyptic number.

It is an amenable number.

36003121728 is an abundant number, since it is smaller than the sum of its proper divisors (75805955136).

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

36003121728 is a wasteful number, since it uses less digits than its factorization.

36003121728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724060 (or 724050 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 36003121728 in words is "thirty-six billion, three million, one hundred twenty-one thousand, seven hundred twenty-eight".