30542738688 has 1080 divisors, whose sum is σ = 119997647616. Its totient is φ = 7554539520.

The previous prime is 30542738669. The next prime is 30542738689. The reversal of 30542738688 is 88683724503.

30542738688 is a `hidden beast` number, since 3 + 0 + 542 + 7 + 38 + 68 + 8 = 666.

It is a super-2 number, since 2×30542738688² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30542738689) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 649845481 + ... + 649845527.

Almost surely, 2^30542738688 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 30542738688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59998823808).

30542738688 is an abundant number, since it is smaller than the sum of its proper divisors (89454908928).

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

30542738688 is a wasteful number, since it uses less digits than its factorization.

30542738688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 30542738688 in words is "thirty billion, five hundred forty-two million, seven hundred thirty-eight thousand, six hundred eighty-eight".