30996723405568 has 72 divisors (see below), whose sum is σ = 62322311374400. Its totient is φ = 15385672479744.

The previous prime is 30996723405553. The next prime is 30996723405569. The reversal of 30996723405568 is 86550432769903.

It is not an unprimeable number, because it can be changed into a prime (30996723405569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620666743 + ... + 620716681.

Almost surely, 2^{30996723405568} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30996723405568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31161155687200).

30996723405568 is an abundant number, since it is smaller than the sum of its proper divisors (31325587968832).

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

30996723405568 is a wasteful number, since it uses less digits than its factorization.

30996723405568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67537 (or 67523 counting only the distinct ones).

The product of its (nonzero) digits is 293932800, while the sum is 67.

The spelling of 30996723405568 in words is "thirty trillion, nine hundred ninety-six billion, seven hundred twenty-three million, four hundred five thousand, five hundred sixty-eight".