29963642972021 has 32 divisors (see below), whose sum is σ = 34474829230080. Its totient is φ = 25799415969600.

The previous prime is 29963642971987. The next prime is 29963642972051. The reversal of 29963642972021 is 12027924636992.

It is a cyclic number.

It is not a de Polignac number, because 29963642972021 - 2⁶ = 29963642971957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29963642972051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4279871 + ... + 8845596.

It is an arithmetic number, because the mean of its divisors is an integer number (1077338413440).

Almost surely, 2^{29963642972021} is an apocalyptic number.

It is an amenable number.

29963642972021 is a deficient number, since it is larger than the sum of its proper divisors (4511186258059).

29963642972021 is a wasteful number, since it uses less digits than its factorization.

29963642972021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13125665.

The product of its (nonzero) digits is 35271936, while the sum is 62.

The spelling of 29963642972021 in words is "twenty-nine trillion, nine hundred sixty-three billion, six hundred forty-two million, nine hundred seventy-two thousand, twenty-one".