30722065440 has 384 divisors, whose sum is σ = 112901548032. Its totient is φ = 6939525120.

The previous prime is 30722065433. The next prime is 30722065481. The reversal of 30722065440 is 4456022703.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9243619 + ... + 9246941.

It is an arithmetic number, because the mean of its divisors is an integer number (294014448).

Almost surely, 2^30722065440 is an apocalyptic number.

30722065440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30722065440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56450774016).

30722065440 is an abundant number, since it is smaller than the sum of its proper divisors (82179482592).

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

30722065440 is a wasteful number, since it uses less digits than its factorization.

30722065440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472 (or 3464 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 33.

The spelling of 30722065440 in words is "thirty billion, seven hundred twenty-two million, sixty-five thousand, four hundred forty".