7643166733 has 2 divisors, whose sum is σ = 7643166734. Its totient is φ = 7643166732.

The previous prime is 7643166691. The next prime is 7643166761. The reversal of 7643166733 is 3376613467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4279514724 + 3363652009 = 65418^2 + 57997^2 .

It is a cyclic number.

It is not a de Polignac number, because 7643166733 - 2²⁹ = 7106295821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7643163733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3821583366 + 3821583367.

It is an arithmetic number, because the mean of its divisors is an integer number (3821583367).

Almost surely, 2^7643166733 is an apocalyptic number.

It is an amenable number.

7643166733 is a deficient number, since it is larger than the sum of its proper divisors (1).

7643166733 is an equidigital number, since it uses as much as digits as its factorization.

7643166733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1143072, while the sum is 46.

The square root of 7643166733 is about 87425.2065081919. The cubic root of 7643166733 is about 1969.8104838861.

The spelling of 7643166733 in words is "seven billion, six hundred forty-three million, one hundred sixty-six thousand, seven hundred thirty-three".