30973487936689 has 3 divisors (see below), whose sum is σ = 30973493502073. Its totient is φ = 30973482371306.

The previous prime is 30973487936617. The next prime is 30973487936711. The reversal of 30973487936689 is 98663978437903.

The square root of 30973487936689 is 5565383.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 30973487936689 - 2¹⁹ = 30973487412401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30973487930689) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2782692 + ... + 8348074.

Almost surely, 2^{30973487936689} is an apocalyptic number.

30973487936689 is the 5565383-rd square number.

30973487936689 is the 2782692-nd centered octagonal number.

It is an amenable number.

30973487936689 is a deficient number, since it is larger than the sum of its proper divisors (5565384).

30973487936689 is an frugal number, since it uses more digits than its factorization.

30973487936689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11130766 (or 5565383 counting only the distinct ones).

The product of its (nonzero) digits is 8888527872, while the sum is 82.

The spelling of 30973487936689 in words is "thirty trillion, nine hundred seventy-three billion, four hundred eighty-seven million, nine hundred thirty-six thousand, six hundred eighty-nine".