30506133700 has 72 divisors (see below), whose sum is σ = 77700012992. Its totient is φ = 10176554880.

The previous prime is 30506133661. The next prime is 30506133703. The reversal of 30506133700 is 733160503.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (30506133703) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 563022 + ... + 614821.

Almost surely, 2^30506133700 is an apocalyptic number.

It is an amenable number.

30506133700 is an abundant number, since it is smaller than the sum of its proper divisors (47193879292).

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

30506133700 is a wasteful number, since it uses less digits than its factorization.

30506133700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177901 (or 1177894 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 28.

The spelling of 30506133700 in words is "thirty billion, five hundred six million, one hundred thirty-three thousand, seven hundred".