30001728885743 has 4 divisors (see below), whose sum is σ = 30001885026048. Its totient is φ = 30001572745440.

The previous prime is 30001728885727. The next prime is 30001728885749. The reversal of 30001728885743 is 34758882710003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30001728885743 - 2⁴ = 30001728885727 is a prime.

It is a super-2 number, since 2×30001728885743² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30001728885749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77781578 + ... + 78166343.

It is an arithmetic number, because the mean of its divisors is an integer number (7500471256512).

Almost surely, 2^{30001728885743} is an apocalyptic number.

30001728885743 is a deficient number, since it is larger than the sum of its proper divisors (156140305).

30001728885743 is a wasteful number, since it uses less digits than its factorization.

30001728885743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156140304.

The product of its (nonzero) digits is 9031680, while the sum is 56.

The spelling of 30001728885743 in words is "thirty trillion, one billion, seven hundred twenty-eight million, eight hundred eighty-five thousand, seven hundred forty-three".