29727921097 has 16 divisors (see below), whose sum is σ = 36022465152. Its totient is φ = 23949400320.

The previous prime is 29727921053. The next prime is 29727921133. The reversal of 29727921097 is 79012972792.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29727921097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29727921017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83179 + ... + 257632.

It is an arithmetic number, because the mean of its divisors is an integer number (2251404072).

Almost surely, 2^29727921097 is an apocalyptic number.

It is an amenable number.

29727921097 is a deficient number, since it is larger than the sum of its proper divisors (6294544055).

29727921097 is a wasteful number, since it uses less digits than its factorization.

29727921097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341568.

The product of its (nonzero) digits is 2000376, while the sum is 55.

The spelling of 29727921097 in words is "twenty-nine billion, seven hundred twenty-seven million, nine hundred twenty-one thousand, ninety-seven".