29997506889479 has 2 divisors, whose sum is σ = 29997506889480. Its totient is φ = 29997506889478.

The previous prime is 29997506889461. The next prime is 29997506889521. The reversal of 29997506889479 is 97498860579992.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 29997506889479 - 2²⁰ = 29997505840903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29997596889479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14998753444739 + 14998753444740.

It is an arithmetic number, because the mean of its divisors is an integer number (14998753444740).

Almost surely, 2^{29997506889479} is an apocalyptic number.

29997506889479 is a deficient number, since it is larger than the sum of its proper divisors (1).

29997506889479 is an equidigital number, since it uses as much as digits as its factorization.

29997506889479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44442639360, while the sum is 92.

The spelling of 29997506889479 in words is "twenty-nine trillion, nine hundred ninety-seven billion, five hundred six million, eight hundred eighty-nine thousand, four hundred seventy-nine".