20901527712 has 120 divisors (see below), whose sum is σ = 66199443156. Its totient is φ = 6431228928.

The previous prime is 20901527687. The next prime is 20901527723. The reversal of 20901527712 is 21772510902.

It can be written as a sum of positive squares in 2 ways, for example, as 20850204816 + 51322896 = 144396^2 + 7164^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 19 ways as a sum of consecutive naturals, for example, 276453 + ... + 343844.

Almost surely, 2^20901527712 is an apocalyptic number.

It is an amenable number.

20901527712 is an abundant number, since it is smaller than the sum of its proper divisors (45297915444).

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

20901527712 is a wasteful number, since it uses less digits than its factorization.

20901527712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620332 (or 620315 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 20901527712 in words is "twenty billion, nine hundred one million, five hundred twenty-seven thousand, seven hundred twelve".