30689743968 has 480 divisors, whose sum is σ = 101428588800. Its totient is φ = 9041808384.

The previous prime is 30689743967. The next prime is 30689743979. The reversal of 30689743968 is 86934798603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30689743967) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 85486573 + ... + 85486931.

It is an arithmetic number, because the mean of its divisors is an integer number (211309560).

Almost surely, 2^30689743968 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 30689743968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50714294400).

30689743968 is an abundant number, since it is smaller than the sum of its proper divisors (70738844832).

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

30689743968 is a wasteful number, since it uses less digits than its factorization.

30689743968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 30689743968 in words is "thirty billion, six hundred eighty-nine million, seven hundred forty-three thousand, nine hundred sixty-eight".