20501045288 has 16 divisors (see below), whose sum is σ = 38449332180. Its totient is φ = 10247890048.

The previous prime is 20501045287. The next prime is 20501045311. The reversal of 20501045288 is 88254010502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15544603684 + 4956441604 = 124678^2 + 70402^2 .

It is not an unprimeable number, because it can be changed into a prime (20501045287) 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, 295781 + ... + 358452.

Almost surely, 2^20501045288 is an apocalyptic number.

It is an amenable number.

20501045288 is a deficient number, since it is larger than the sum of its proper divisors (17948286892).

20501045288 is a wasteful number, since it uses less digits than its factorization.

20501045288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658156 (or 658152 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 35.

The spelling of 20501045288 in words is "twenty billion, five hundred one million, forty-five thousand, two hundred eighty-eight".