4172266643 has 2 divisors, whose sum is σ = 4172266644. Its totient is φ = 4172266642.

The previous prime is 4172266621. The next prime is 4172266699. The reversal of 4172266643 is 3466622714.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4172266643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4172266643.

It is not a weakly prime, because it can be changed into another prime (4172266603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2086133321 + 2086133322.

It is an arithmetic number, because the mean of its divisors is an integer number (2086133322).

Almost surely, 2^4172266643 is an apocalyptic number.

4172266643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4172266643 is an equidigital number, since it uses as much as digits as its factorization.

4172266643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 4172266643 is about 64593.0851020448. The cubic root of 4172266643 is about 1609.8695473176.

The spelling of 4172266643 in words is "four billion, one hundred seventy-two million, two hundred sixty-six thousand, six hundred forty-three".