247308284653 has 2 divisors, whose sum is σ = 247308284654. Its totient is φ = 247308284652.

The previous prime is 247308284579. The next prime is 247308284681. The reversal of 247308284653 is 356482803742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192964282729 + 54344001924 = 439277^2 + 233118^2 .

It is a cyclic number.

It is not a de Polignac number, because 247308284653 - 2⁹ = 247308284141 is a prime.

It is a super-2 number, since 2×247308284653² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 247308284653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247308204653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123654142326 + 123654142327.

It is an arithmetic number, because the mean of its divisors is an integer number (123654142327).

Almost surely, 2^247308284653 is an apocalyptic number.

It is an amenable number.

247308284653 is a deficient number, since it is larger than the sum of its proper divisors (1).

247308284653 is an equidigital number, since it uses as much as digits as its factorization.

247308284653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 52.

Subtracting from 247308284653 its sum of digits (52), we obtain a square (247308284601 = 497301²).

The spelling of 247308284653 in words is "two hundred forty-seven billion, three hundred eight million, two hundred eighty-four thousand, six hundred fifty-three".