30640235450 has 144 divisors (see below), whose sum is σ = 66252072096. Its totient is φ = 10451126400.

The previous prime is 30640235369. The next prime is 30640235453. The reversal of 30640235450 is 5453204603.

It is not an unprimeable number, because it can be changed into a prime (30640235453) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15419357 + ... + 15421343.

It is an arithmetic number, because the mean of its divisors is an integer number (460083834).

Almost surely, 2^30640235450 is an apocalyptic number.

30640235450 is an abundant number, since it is smaller than the sum of its proper divisors (35611836646).

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

30640235450 is a wasteful number, since it uses less digits than its factorization.

30640235450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2109 (or 2081 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The spelling of 30640235450 in words is "thirty billion, six hundred forty million, two hundred thirty-five thousand, four hundred fifty".