30539729880 has 192 divisors, whose sum is σ = 108650898720. Its totient is φ = 7378022400.

The previous prime is 30539729873. The next prime is 30539729897. The reversal of 30539729880 is 8892793503.

It is a happy number.

30539729880 is a `hidden beast` number, since 3 + 0 + 539 + 7 + 29 + 8 + 80 = 666.

It is a super-2 number, since 2×30539729880² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1147120 + ... + 1173440.

Almost surely, 2^30539729880 is an apocalyptic number.

30539729880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30539729880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54325449360).

30539729880 is an abundant number, since it is smaller than the sum of its proper divisors (78111168840).

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

30539729880 is a wasteful number, since it uses less digits than its factorization.

30539729880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26642 (or 26635 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 30539729880 in words is "thirty billion, five hundred thirty-nine million, seven hundred twenty-nine thousand, eight hundred eighty".