17880000847 has 2 divisors, whose sum is σ = 17880000848. Its totient is φ = 17880000846.

The previous prime is 17880000793. The next prime is 17880000877. The reversal of 17880000847 is 74800008871.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17880000847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17880000877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8940000423 + 8940000424.

It is an arithmetic number, because the mean of its divisors is an integer number (8940000424).

Almost surely, 2^17880000847 is an apocalyptic number.

17880000847 is a deficient number, since it is larger than the sum of its proper divisors (1).

17880000847 is an equidigital number, since it uses as much as digits as its factorization.

17880000847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 43.

The spelling of 17880000847 in words is "seventeen billion, eight hundred eighty million, eight hundred forty-seven", and thus it is an aban number.