205727070619 has 4 divisors (see below), whose sum is σ = 235116652144. Its totient is φ = 176337489096.

The previous prime is 205727070617. The next prime is 205727070629. The reversal of 205727070619 is 916070727502.

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 205727070619 - 2¹ = 205727070617 is a prime.

It is a super-2 number, since 2×205727070619² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205727070611) 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, 14694790752 + ... + 14694790765.

It is an arithmetic number, because the mean of its divisors is an integer number (58779163036).

Almost surely, 2^205727070619 is an apocalyptic number.

205727070619 is a deficient number, since it is larger than the sum of its proper divisors (29389581525).

205727070619 is an equidigital number, since it uses as much as digits as its factorization.

205727070619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29389581524.

The product of its (nonzero) digits is 370440, while the sum is 46.

The spelling of 205727070619 in words is "two hundred five billion, seven hundred twenty-seven million, seventy thousand, six hundred nineteen".