203138660211 has 16 divisors (see below), whose sum is σ = 271162805760. Its totient is φ = 135270238880.

The previous prime is 203138660161. The next prime is 203138660213. The reversal of 203138660211 is 112066831302.

It is a cyclic number.

It is not a de Polignac number, because 203138660211 - 2²² = 203134465907 is a prime.

It is a super-2 number, since 2×203138660211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203138660213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10157620 + ... + 10177598.

It is an arithmetic number, because the mean of its divisors is an integer number (16947675360).

Almost surely, 2^203138660211 is an apocalyptic number.

203138660211 is a deficient number, since it is larger than the sum of its proper divisors (68024145549).

203138660211 is a wasteful number, since it uses less digits than its factorization.

203138660211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23706.

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 203138660211 in words is "two hundred three billion, one hundred thirty-eight million, six hundred sixty thousand, two hundred eleven".