205464464501 has 4 divisors (see below), whose sum is σ = 214397702112. Its totient is φ = 196531226892.

The previous prime is 205464464431. The next prime is 205464464519. The reversal of 205464464501 is 105464464502.

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 a de Polignac number, because none of the positive numbers 2^k-205464464501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205464464551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4466618771 + ... + 4466618816.

It is an arithmetic number, because the mean of its divisors is an integer number (53599425528).

Almost surely, 2^205464464501 is an apocalyptic number.

It is an amenable number.

205464464501 is a deficient number, since it is larger than the sum of its proper divisors (8933237611).

205464464501 is an equidigital number, since it uses as much as digits as its factorization.

205464464501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8933237610.

The product of its (nonzero) digits is 460800, while the sum is 41.

Subtracting from 205464464501 its reverse (105464464502), we obtain a palindrome (99999999999).

The spelling of 205464464501 in words is "two hundred five billion, four hundred sixty-four million, four hundred sixty-four thousand, five hundred one".