4297471216991 has 2 divisors, whose sum is σ = 4297471216992. Its totient is φ = 4297471216990.

The previous prime is 4297471216981. The next prime is 4297471217003. The reversal of 4297471216991 is 1996121747924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4297471216991 - 2²² = 4297467022687 is a prime.

It is a super-2 number, since 2×4297471216991² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4297471216921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2148735608495 + 2148735608496.

It is an arithmetic number, because the mean of its divisors is an integer number (2148735608496).

Almost surely, 2^{4297471216991} is an apocalyptic number.

4297471216991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4297471216991 is an equidigital number, since it uses as much as digits as its factorization.

4297471216991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13716864, while the sum is 62.

The spelling of 4297471216991 in words is "four trillion, two hundred ninety-seven billion, four hundred seventy-one million, two hundred sixteen thousand, nine hundred ninety-one".