20135405132 has 48 divisors (see below), whose sum is σ = 37582161120. Its totient is φ = 9406513152.

The previous prime is 20135405111. The next prime is 20135405141. The reversal of 20135405132 is 23150453102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7571219 + ... + 7573877.

It is an arithmetic number, because the mean of its divisors is an integer number (782961690).

Almost surely, 2^20135405132 is an apocalyptic number.

It is an amenable number.

20135405132 is a deficient number, since it is larger than the sum of its proper divisors (17446755988).

20135405132 is a wasteful number, since it uses less digits than its factorization.

20135405132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450 (or 3448 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20135405132 its reverse (23150453102), we get a palindrome (43285858234).

The spelling of 20135405132 in words is "twenty billion, one hundred thirty-five million, four hundred five thousand, one hundred thirty-two".