29993239861693 has 2 divisors, whose sum is σ = 29993239861694. Its totient is φ = 29993239861692.

The previous prime is 29993239861639. The next prime is 29993239861723. The reversal of 29993239861693 is 39616893239992.

Together with previous prime (29993239861639) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27372379987044 + 2620859874649 = 5231862^2 + 1618907^2 .

It is a cyclic number.

It is not a de Polignac number, because 29993239861693 - 2²⁵ = 29993206307261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29993239861603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14996619930846 + 14996619930847.

It is an arithmetic number, because the mean of its divisors is an integer number (14996619930847).

Almost surely, 2^{29993239861693} is an apocalyptic number.

It is an amenable number.

29993239861693 is a deficient number, since it is larger than the sum of its proper divisors (1).

29993239861693 is an equidigital number, since it uses as much as digits as its factorization.

29993239861693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1836660096, while the sum is 79.

The spelling of 29993239861693 in words is "twenty-nine trillion, nine hundred ninety-three billion, two hundred thirty-nine million, eight hundred sixty-one thousand, six hundred ninety-three".