20001000132 has 36 divisors (see below), whose sum is σ = 50595355356. Its totient is φ = 6662085120.

The previous prime is 20001000109. The next prime is 20001000181. The reversal of 20001000132 is 23100010002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12315672576 + 7685327556 = 110976^2 + 87666^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155113 + ... + 253104.

Almost surely, 2^20001000132 is an apocalyptic number.

It is an amenable number.

20001000132 is an abundant number, since it is smaller than the sum of its proper divisors (30594355224).

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

20001000132 is a wasteful number, since it uses less digits than its factorization.

20001000132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409588 (or 409583 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 20001000132 its reverse (23100010002), we get a palindrome (43101010134).

The spelling of 20001000132 in words is "twenty billion, one million, one hundred thirty-two", and thus it is an aban number.