247830001591 has 2 divisors, whose sum is σ = 247830001592. Its totient is φ = 247830001590.

The previous prime is 247830001561. The next prime is 247830001609. The reversal of 247830001591 is 195100038742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247830001591 - 2¹⁵ = 247829968823 is a prime.

It is a super-2 number, since 2×247830001591² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247830001561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123915000795 + 123915000796.

It is an arithmetic number, because the mean of its divisors is an integer number (123915000796).

Almost surely, 2^247830001591 is an apocalyptic number.

247830001591 is a deficient number, since it is larger than the sum of its proper divisors (1).

247830001591 is an equidigital number, since it uses as much as digits as its factorization.

247830001591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 247830001591 in words is "two hundred forty-seven billion, eight hundred thirty million, one thousand, five hundred ninety-one".