4211665541 has 2 divisors, whose sum is σ = 4211665542. Its totient is φ = 4211665540.

The previous prime is 4211665453. The next prime is 4211665547. The reversal of 4211665541 is 1455661124.

4211665541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3553948225 + 657717316 = 59615^2 + 25646^2 .

It is a cyclic number.

It is not a de Polignac number, because 4211665541 - 2³⁰ = 3137923717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4211665547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105832770 + 2105832771.

It is an arithmetic number, because the mean of its divisors is an integer number (2105832771).

Almost surely, 2^4211665541 is an apocalyptic number.

It is an amenable number.

4211665541 is a deficient number, since it is larger than the sum of its proper divisors (1).

4211665541 is an equidigital number, since it uses as much as digits as its factorization.

4211665541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 35.

The square root of 4211665541 is about 64897.3461784070. The cubic root of 4211665541 is about 1614.9210364380.

The spelling of 4211665541 in words is "four billion, two hundred eleven million, six hundred sixty-five thousand, five hundred forty-one".