205234350402 has 64 divisors (see below), whose sum is σ = 423759651840. Its totient is φ = 66236374464.

The previous prime is 205234350341. The next prime is 205234350403. The reversal of 205234350402 is 204053432502.

It is a super-2 number, since 2×205234350402² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 205234350402.

It is not an unprimeable number, because it can be changed into a prime (205234350403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7367833 + ... + 7395635.

It is an arithmetic number, because the mean of its divisors is an integer number (6621244560).

Almost surely, 2^205234350402 is an apocalyptic number.

205234350402 is an abundant number, since it is smaller than the sum of its proper divisors (218525301438).

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

205234350402 is a wasteful number, since it uses less digits than its factorization.

205234350402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28167.

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 205234350402 its reverse (204053432502), we get a palindrome (409287782904).

The spelling of 205234350402 in words is "two hundred five billion, two hundred thirty-four million, three hundred fifty thousand, four hundred two".