29981402268 has 12 divisors (see below), whose sum is σ = 69956605320. Its totient is φ = 9993800752.

The previous prime is 29981402207. The next prime is 29981402323. The reversal of 29981402268 is 86220418992.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 29981402268.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249225083 + ... + 1249225106.

It is an arithmetic number, because the mean of its divisors is an integer number (5829717110).

Almost surely, 2^29981402268 is an apocalyptic number.

It is an amenable number.

29981402268 is an abundant number, since it is smaller than the sum of its proper divisors (39975203052).

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

29981402268 is a wasteful number, since it uses less digits than its factorization.

29981402268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498450196 (or 2498450194 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The spelling of 29981402268 in words is "twenty-nine billion, nine hundred eighty-one million, four hundred two thousand, two hundred sixty-eight".