206440534074 has 48 divisors (see below), whose sum is σ = 427791413088. Its totient is φ = 66412336704.

The previous prime is 206440534063. The next prime is 206440534117. The reversal of 206440534074 is 470435044602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14106349 + ... + 14120975.

It is an arithmetic number, because the mean of its divisors is an integer number (8912321106).

Almost surely, 2^206440534074 is an apocalyptic number.

206440534074 is an abundant number, since it is smaller than the sum of its proper divisors (221350879014).

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

206440534074 is a wasteful number, since it uses less digits than its factorization.

206440534074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17487 (or 17458 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 39.

Adding to 206440534074 its reverse (470435044602), we get a palindrome (676875578676).

The spelling of 206440534074 in words is "two hundred six billion, four hundred forty million, five hundred thirty-four thousand, seventy-four".