29993297206391 has 2 divisors, whose sum is σ = 29993297206392. Its totient is φ = 29993297206390.

The previous prime is 29993297206381. The next prime is 29993297206429. The reversal of 29993297206391 is 19360279239992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29993297206391 - 2²⁶ = 29993230097527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29993297206331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14996648603195 + 14996648603196.

It is an arithmetic number, because the mean of its divisors is an integer number (14996648603196).

Almost surely, 2^{29993297206391} is an apocalyptic number.

29993297206391 is a deficient number, since it is larger than the sum of its proper divisors (1).

29993297206391 is an equidigital number, since it uses as much as digits as its factorization.

29993297206391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 178564176, while the sum is 71.

The spelling of 29993297206391 in words is "twenty-nine trillion, nine hundred ninety-three billion, two hundred ninety-seven million, two hundred six thousand, three hundred ninety-one".