205100670261401 has 4 divisors (see below), whose sum is σ = 205825407612432. Its totient is φ = 204375932910372.

The previous prime is 205100670261379. The next prime is 205100670261457. The reversal of 205100670261401 is 104162076001502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 205100670261401 - 2¹⁰ = 205100670260377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205100670261601) 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, 362368675091 + ... + 362368675656.

It is an arithmetic number, because the mean of its divisors is an integer number (51456351903108).

Almost surely, 2^{205100670261401} is an apocalyptic number.

It is an amenable number.

205100670261401 is a deficient number, since it is larger than the sum of its proper divisors (724737351031).

205100670261401 is an equidigital number, since it uses as much as digits as its factorization.

205100670261401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724737351030.

The product of its (nonzero) digits is 20160, while the sum is 35.

The spelling of 205100670261401 in words is "two hundred five trillion, one hundred billion, six hundred seventy million, two hundred sixty-one thousand, four hundred one".