205864468502 has 16 divisors (see below), whose sum is σ = 384993292032. Its totient is φ = 80206935720.

The previous prime is 205864468493. The next prime is 205864468553.

205864468502 is nontrivially palindromic in base 10.

205864468502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×205864468502² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668390978 + ... + 668391285.

It is an arithmetic number, because the mean of its divisors is an integer number (24062080752).

Almost surely, 2^205864468502 is an apocalyptic number.

205864468502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205864468502 is a deficient number, since it is larger than the sum of its proper divisors (179128823530).

205864468502 is a wasteful number, since it uses less digits than its factorization.

205864468502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336782283.

The product of its (nonzero) digits is 3686400, while the sum is 50.

The spelling of 205864468502 in words is "two hundred five billion, eight hundred sixty-four million, four hundred sixty-eight thousand, five hundred two".