247987216133 has 2 divisors, whose sum is σ = 247987216134. Its totient is φ = 247987216132.

The previous prime is 247987216091. The next prime is 247987216157. The reversal of 247987216133 is 331612789742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215724949444 + 32262266689 = 464462^2 + 179617^2 .

It is a cyclic number.

It is not a de Polignac number, because 247987216133 - 2¹⁰ = 247987215109 is a prime.

It is a super-2 number, since 2×247987216133² (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 (247987116133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123993608066 + 123993608067.

It is an arithmetic number, because the mean of its divisors is an integer number (123993608067).

Almost surely, 2^247987216133 is an apocalyptic number.

It is an amenable number.

247987216133 is a deficient number, since it is larger than the sum of its proper divisors (1).

247987216133 is an equidigital number, since it uses as much as digits as its factorization.

247987216133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3048192, while the sum is 53.

The spelling of 247987216133 in words is "two hundred forty-seven billion, nine hundred eighty-seven million, two hundred sixteen thousand, one hundred thirty-three".