7986663533 has 2 divisors, whose sum is σ = 7986663534. Its totient is φ = 7986663532.

The previous prime is 7986663473. The next prime is 7986663551. The reversal of 7986663533 is 3353666897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7985745769 + 917764 = 89363^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 7986663533 - 2³⁰ = 6912921709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7986660533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3993331766 + 3993331767.

It is an arithmetic number, because the mean of its divisors is an integer number (3993331767).

Almost surely, 2^7986663533 is an apocalyptic number.

It is an amenable number.

7986663533 is a deficient number, since it is larger than the sum of its proper divisors (1).

7986663533 is an equidigital number, since it uses as much as digits as its factorization.

7986663533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14696640, while the sum is 56.

The square root of 7986663533 is about 89368.1348859872. The cubic root of 7986663533 is about 1998.8880096033. Note that the first 3 decimals are identical.

The spelling of 7986663533 in words is "seven billion, nine hundred eighty-six million, six hundred sixty-three thousand, five hundred thirty-three".