30996987648 has 144 divisors (see below), whose sum is σ = 91523779200. Its totient is φ = 9233674240.

The previous prime is 30996987617. The next prime is 30996987653. The reversal of 30996987648 is 84678969903.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 467338 + ... + 529526.

It is an arithmetic number, because the mean of its divisors is an integer number (635581800).

Almost surely, 2^30996987648 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 30996987648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45761889600).

30996987648 is an abundant number, since it is smaller than the sum of its proper divisors (60526791552).

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

30996987648 is a wasteful number, since it uses less digits than its factorization.

30996987648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62278 (or 62264 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 69.

The spelling of 30996987648 in words is "thirty billion, nine hundred ninety-six million, nine hundred eighty-seven thousand, six hundred forty-eight".