30533535440 has 40 divisors (see below), whose sum is σ = 75166383240. Its totient is φ = 11494977536.

The previous prime is 30533535407. The next prime is 30533535449. The reversal of 30533535440 is 4453533503.

It can be written as a sum of positive squares in 4 ways, for example, as 15159519376 + 15374016064 = 123124^2 + 123992^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 30533535440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30533535449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11224205 + ... + 11226924.

It is an arithmetic number, because the mean of its divisors is an integer number (1879159581).

Almost surely, 2^30533535440 is an apocalyptic number.

It is an amenable number.

30533535440 is an abundant number, since it is smaller than the sum of its proper divisors (44632847800).

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

30533535440 is a wasteful number, since it uses less digits than its factorization.

30533535440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22451159 (or 22451153 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 35.

The spelling of 30533535440 in words is "thirty billion, five hundred thirty-three million, five hundred thirty-five thousand, four hundred forty".