205368277380023 has 4 divisors (see below), whose sum is σ = 207675786114720. Its totient is φ = 203060768645328.

The previous prime is 205368277379927. The next prime is 205368277380031. The reversal of 205368277380023 is 320083772863502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205368277380023 - 2²⁴ = 205368260602807 is a prime.

It is a super-2 number, since 2×205368277380023² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205368277380323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153754367215 + ... + 1153754367392.

It is an arithmetic number, because the mean of its divisors is an integer number (51918946528680).

Almost surely, 2^{205368277380023} is an apocalyptic number.

205368277380023 is a deficient number, since it is larger than the sum of its proper divisors (2307508734697).

205368277380023 is an equidigital number, since it uses as much as digits as its factorization.

205368277380023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307508734696.

The product of its (nonzero) digits is 20321280, while the sum is 56.

The spelling of 205368277380023 in words is "two hundred five trillion, three hundred sixty-eight billion, two hundred seventy-seven million, three hundred eighty thousand, twenty-three".