9047657347991 has 2 divisors, whose sum is σ = 9047657347992. Its totient is φ = 9047657347990.

The previous prime is 9047657347873. The next prime is 9047657347997. The reversal of 9047657347991 is 1997437567409.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9047657347991 - 2³⁰ = 9046583606167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9047657347997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4523828673995 + 4523828673996.

It is an arithmetic number, because the mean of its divisors is an integer number (4523828673996).

Almost surely, 2^{9047657347991} is an apocalyptic number.

9047657347991 is a deficient number, since it is larger than the sum of its proper divisors (1).

9047657347991 is an equidigital number, since it uses as much as digits as its factorization.

9047657347991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360067680, while the sum is 71.

The spelling of 9047657347991 in words is "nine trillion, forty-seven billion, six hundred fifty-seven million, three hundred forty-seven thousand, nine hundred ninety-one".