40402173660 has 24 divisors (see below), whose sum is σ = 113126086416. Its totient is φ = 10773912960.

The previous prime is 40402173611. The next prime is 40402173661. The reversal of 40402173660 is 6637120404.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402173661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336684721 + ... + 336684840.

It is an arithmetic number, because the mean of its divisors is an integer number (4713586934).

Almost surely, 2^40402173660 is an apocalyptic number.

It is an amenable number.

40402173660 is an abundant number, since it is smaller than the sum of its proper divisors (72723912756).

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

40402173660 is a wasteful number, since it uses less digits than its factorization.

40402173660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673369573 (or 673369571 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The spelling of 40402173660 in words is "forty billion, four hundred two million, one hundred seventy-three thousand, six hundred sixty".