6661152643 has 2 divisors, whose sum is σ = 6661152644. Its totient is φ = 6661152642.

The previous prime is 6661152637. The next prime is 6661152703. The reversal of 6661152643 is 3462511666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6661152643 - 2⁵ = 6661152611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6661152596 and 6661152605.

It is not a weakly prime, because it can be changed into another prime (6661153643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330576321 + 3330576322.

It is an arithmetic number, because the mean of its divisors is an integer number (3330576322).

Almost surely, 2^6661152643 is an apocalyptic number.

6661152643 is a deficient number, since it is larger than the sum of its proper divisors (1).

6661152643 is an equidigital number, since it uses as much as digits as its factorization.

6661152643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The square root of 6661152643 is about 81615.8847467820. The cubic root of 6661152643 is about 1881.5530251444.

The spelling of 6661152643 in words is "six billion, six hundred sixty-one million, one hundred fifty-two thousand, six hundred forty-three".