29997974071679 has 2 divisors, whose sum is σ = 29997974071680. Its totient is φ = 29997974071678.

The previous prime is 29997974071669. The next prime is 29997974071739. The reversal of 29997974071679 is 97617047979992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29997974071679 - 2¹² = 29997974067583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29997974071679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29997974071669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998987035839 + 14998987035840.

It is an arithmetic number, because the mean of its divisors is an integer number (14998987035840).

Almost surely, 2^{29997974071679} is an apocalyptic number.

29997974071679 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997974071679 is an equidigital number, since it uses as much as digits as its factorization.

29997974071679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6805279152, while the sum is 86.

The spelling of 29997974071679 in words is "twenty-nine trillion, nine hundred ninety-seven billion, nine hundred seventy-four million, seventy-one thousand, six hundred seventy-nine".