132635405121646 has 16 divisors (see below), whose sum is σ = 227376304990560. Its totient is φ = 56843413856640.

The previous prime is 132635405121641. The next prime is 132635405121649. The reversal of 132635405121646 is 646121504536231.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 132635405121646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132635405121641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25103175 + ... + 29923906.

It is an arithmetic number, because the mean of its divisors is an integer number (14211019061910).

Almost surely, 2^{132635405121646} is an apocalyptic number.

132635405121646 is a deficient number, since it is larger than the sum of its proper divisors (94740899868914).

132635405121646 is a wasteful number, since it uses less digits than its factorization.

132635405121646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55199259.

The product of its (nonzero) digits is 3110400, while the sum is 49.

Adding to 132635405121646 its reverse (646121504536231), we get a palindrome (778756909657877).

The spelling of 132635405121646 in words is "one hundred thirty-two trillion, six hundred thirty-five billion, four hundred five million, one hundred twenty-one thousand, six hundred forty-six".