30500093790721 has 9 divisors (see below), whose sum is σ = 30527339434633. Its totient is φ = 30472872456640.

The previous prime is 30500093790707. The next prime is 30500093790773. The reversal of 30500093790721 is 12709739000503.

The square root of 30500093790721 is 5522689.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2880864630721 + 27619229160000 = 1697311^2 + 5255400^2 .

It is not a de Polignac number, because 30500093790721 - 2⁹ = 30500093790209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30500093790701) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9504546165 + ... + 9504549373.

Almost surely, 2^{30500093790721} is an apocalyptic number.

30500093790721 is the 5522689-th square number.

30500093790721 is the 2761345-th centered octagonal number.

It is an amenable number.

30500093790721 is a deficient number, since it is larger than the sum of its proper divisors (27245643912).

30500093790721 is an frugal number, since it uses more digits than its factorization.

30500093790721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9860 (or 4930 counting only the distinct ones).

The product of its (nonzero) digits is 357210, while the sum is 46.

The spelling of 30500093790721 in words is "thirty trillion, five hundred billion, ninety-three million, seven hundred ninety thousand, seven hundred twenty-one".