20011312032 has 48 divisors (see below), whose sum is σ = 52565254560. Its totient is φ = 6665921792.

The previous prime is 20011312003. The next prime is 20011312037. The reversal of 20011312032 is 23021311002.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (20011312037) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73519 + ... + 213137.

It is an arithmetic number, because the mean of its divisors is an integer number (1095109470).

Almost surely, 2^20011312032 is an apocalyptic number.

It is an amenable number.

20011312032 is an abundant number, since it is smaller than the sum of its proper divisors (32553942528).

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

20011312032 is a wasteful number, since it uses less digits than its factorization.

20011312032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141125 (or 141117 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20011312032 its reverse (23021311002), we get a palindrome (43032623034).

The spelling of 20011312032 in words is "twenty billion, eleven million, three hundred twelve thousand, thirty-two".