29317491817961 has 4 divisors (see below), whose sum is σ = 31042050160212. Its totient is φ = 27592933475712.

The previous prime is 29317491817951. The next prime is 29317491818023. The reversal of 29317491817961 is 16971819471392.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14082989958361 + 15234501859600 = 3752731^2 + 3903140^2 .

It is a cyclic number.

It is not a de Polignac number, because 29317491817961 - 2¹⁸ = 29317491555817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 29317491817891 and 29317491817900.

It is not an unprimeable number, because it can be changed into a prime (29317491817951) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862279171100 + ... + 862279171133.

It is an arithmetic number, because the mean of its divisors is an integer number (7760512540053).

Almost surely, 2^{29317491817961} is an apocalyptic number.

It is an amenable number.

29317491817961 is a deficient number, since it is larger than the sum of its proper divisors (1724558342251).

29317491817961 is a wasteful number, since it uses less digits than its factorization.

29317491817961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1724558342250.

The product of its digits is 41150592, while the sum is 68.

The spelling of 29317491817961 in words is "twenty-nine trillion, three hundred seventeen billion, four hundred ninety-one million, eight hundred seventeen thousand, nine hundred sixty-one".