29955205538250 has 128 divisors (see below), whose sum is σ = 76001965348608. Its totient is φ = 7856269344000.

The previous prime is 29955205538231. The next prime is 29955205538263. The reversal of 29955205538250 is 5283550255992.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 514338132 + ... + 514396368.

It is an arithmetic number, because the mean of its divisors is an integer number (593765354286).

Almost surely, 2^{29955205538250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29955205538250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38000982674304).

29955205538250 is an abundant number, since it is smaller than the sum of its proper divisors (46046759810358).

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

29955205538250 is a wasteful number, since it uses less digits than its factorization.

29955205538250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69561 (or 69551 counting only the distinct ones).

The product of its (nonzero) digits is 48600000, while the sum is 60.

The spelling of 29955205538250 in words is "twenty-nine trillion, nine hundred fifty-five billion, two hundred five million, five hundred thirty-eight thousand, two hundred fifty".