205455554502 has 32 divisors (see below), whose sum is σ = 448284672000. Its totient is φ = 62256757920.

The previous prime is 205455554489. The next prime is 205455554509.

It is a happy number.

205455554502 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205455554509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2218624 + ... + 2309372.

It is an arithmetic number, because the mean of its divisors is an integer number (14008896000).

Almost surely, 2^205455554502 is an apocalyptic number.

205455554502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205455554502 is an abundant number, since it is smaller than the sum of its proper divisors (242829117498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205455554502 is a wasteful number, since it uses less digits than its factorization.

205455554502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125068.

The product of its (nonzero) digits is 1000000, while the sum is 42.

It can be divided in two parts, 205455 and 554502, that added together give a palindrome (759957).

The spelling of 205455554502 in words is "two hundred five billion, four hundred fifty-five million, five hundred fifty-four thousand, five hundred two".