4211665538 has 16 divisors (see below), whose sum is σ = 6400037760. Its totient is φ = 2078341200.

The previous prime is 4211665453. The next prime is 4211665541. The reversal of 4211665538 is 8355661124.

It is a junction number, because it is equal to n+sod(n) for n = 4211665495 and 4211665504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617708 + ... + 624488.

It is an arithmetic number, because the mean of its divisors is an integer number (400002360).

Almost surely, 2^4211665538 is an apocalyptic number.

4211665538 is a deficient number, since it is larger than the sum of its proper divisors (2188372222).

4211665538 is a wasteful number, since it uses less digits than its factorization.

4211665538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793.

The product of its digits is 172800, while the sum is 41.

The square root of 4211665538 is about 64897.3461552936. The cubic root of 4211665538 is about 1614.9210360546.

The spelling of 4211665538 in words is "four billion, two hundred eleven million, six hundred sixty-five thousand, five hundred thirty-eight".