205734226417 has 4 divisors (see below), whose sum is σ = 205735541760. Its totient is φ = 205732911076.

The previous prime is 205734226409. The next prime is 205734226427. The reversal of 205734226417 is 714622437502.

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 205734226417 - 2³ = 205734226409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205734226427) 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, 385513 + ... + 748390.

It is an arithmetic number, because the mean of its divisors is an integer number (51433885440).

Almost surely, 2^205734226417 is an apocalyptic number.

It is an amenable number.

205734226417 is a deficient number, since it is larger than the sum of its proper divisors (1315343).

205734226417 is a wasteful number, since it uses less digits than its factorization.

205734226417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315342.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 205734226417 in words is "two hundred five billion, seven hundred thirty-four million, two hundred twenty-six thousand, four hundred seventeen".