247936066493 has 2 divisors, whose sum is σ = 247936066494. Its totient is φ = 247936066492.

The previous prime is 247936066489. The next prime is 247936066571. The reversal of 247936066493 is 394660639742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128080241689 + 119855824804 = 357883^2 + 346202^2 .

It is a cyclic number.

It is not a de Polignac number, because 247936066493 - 2² = 247936066489 is a prime.

It is a super-2 number, since 2×247936066493² (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 (247936066403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123968033246 + 123968033247.

It is an arithmetic number, because the mean of its divisors is an integer number (123968033247).

Almost surely, 2^247936066493 is an apocalyptic number.

It is an amenable number.

247936066493 is a deficient number, since it is larger than the sum of its proper divisors (1).

247936066493 is an equidigital number, since it uses as much as digits as its factorization.

247936066493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35271936, while the sum is 59.

The spelling of 247936066493 in words is "two hundred forty-seven billion, nine hundred thirty-six million, sixty-six thousand, four hundred ninety-three".