29680680961 has 4 divisors (see below), whose sum is σ = 29770351024. Its totient is φ = 29591010900.

The previous prime is 29680680937. The next prime is 29680680971. The reversal of 29680680961 is 16908608692.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29680680961 - 2⁵ = 29680680929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29680680971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44834535 + ... + 44835196.

It is an arithmetic number, because the mean of its divisors is an integer number (7442587756).

Almost surely, 2^29680680961 is an apocalyptic number.

It is an amenable number.

29680680961 is a deficient number, since it is larger than the sum of its proper divisors (89670063).

29680680961 is an equidigital number, since it uses as much as digits as its factorization.

29680680961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89670062.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 29680680961 in words is "twenty-nine billion, six hundred eighty million, six hundred eighty thousand, nine hundred sixty-one".