6634145543 has 2 divisors, whose sum is σ = 6634145544. Its totient is φ = 6634145542.

The previous prime is 6634145527. The next prime is 6634145561. The reversal of 6634145543 is 3455414366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6634145543 - 2⁴ = 6634145527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6634145543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6634145503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3317072771 + 3317072772.

It is an arithmetic number, because the mean of its divisors is an integer number (3317072772).

Almost surely, 2^6634145543 is an apocalyptic number.

6634145543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6634145543 is an equidigital number, since it uses as much as digits as its factorization.

6634145543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 41.

The square root of 6634145543 is about 81450.2642291601. The cubic root of 6634145543 is about 1879.0067130158.

The spelling of 6634145543 in words is "six billion, six hundred thirty-four million, one hundred forty-five thousand, five hundred forty-three".