30129255534 has 96 divisors (see below), whose sum is σ = 72608050080. Its totient is φ = 8300716032.

The previous prime is 30129255521. The next prime is 30129255571. The reversal of 30129255534 is 43555292103.

It is a junction number, because it is equal to n+sod(n) for n = 30129255492 and 30129255501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8328094 + ... + 8331710.

It is an arithmetic number, because the mean of its divisors is an integer number (756333855).

Almost surely, 2^30129255534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30129255534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36304025040).

30129255534 is an abundant number, since it is smaller than the sum of its proper divisors (42478794546).

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

30129255534 is a wasteful number, since it uses less digits than its factorization.

30129255534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642 (or 4635 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 30129255534 in words is "thirty billion, one hundred twenty-nine million, two hundred fifty-five thousand, five hundred thirty-four".