132635405121640 has 16 divisors (see below), whose sum is σ = 298429661523780. Its totient is φ = 53054162048640.

The previous prime is 132635405121629. The next prime is 132635405121641. The reversal of 132635405121640 is 46121504536231.

It can be written as a sum of positive squares in 2 ways, for example, as 132552991343556 + 82413778084 = 11513166^2 + 287078^2 .

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 3 ways as a sum of consecutive naturals, for example, 1657942563981 + ... + 1657942564060.

Almost surely, 2^{132635405121640} is an apocalyptic number.

132635405121640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132635405121640 is an abundant number, since it is smaller than the sum of its proper divisors (165794256402140).

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

132635405121640 is a wasteful number, since it uses less digits than its factorization.

132635405121640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315885128052 (or 3315885128048 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

Adding to 132635405121640 its reverse (46121504536231), we get a palindrome (178756909657871).

The spelling of 132635405121640 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".