203141421161565 has 16 divisors (see below), whose sum is σ = 344145466438848. Its totient is φ = 101969027092736.

The previous prime is 203141421161543. The next prime is 203141421161587. The reversal of 203141421161565 is 565161124141302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (203141421161543) and next prime (203141421161587).

It is a cyclic number.

It is not a de Polignac number, because 203141421161565 - 2⁶ = 203141421161501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 398316511827 + ... + 398316512336.

It is an arithmetic number, because the mean of its divisors is an integer number (21509091652428).

Almost surely, 2^{203141421161565} is an apocalyptic number.

It is an amenable number.

203141421161565 is a deficient number, since it is larger than the sum of its proper divisors (141004045277283).

203141421161565 is a wasteful number, since it uses less digits than its factorization.

203141421161565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796633024188.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 203141421161565 in words is "two hundred three trillion, one hundred forty-one billion, four hundred twenty-one million, one hundred sixty-one thousand, five hundred sixty-five".