20028865945132 has 48 divisors (see below), whose sum is σ = 39900018864384. Its totient is φ = 8708067720000.

The previous prime is 20028865945111. The next prime is 20028865945139. The reversal of 20028865945132 is 23154956882002.

It is not an unprimeable number, because it can be changed into a prime (20028865945139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93463507 + ... + 93677557.

It is an arithmetic number, because the mean of its divisors is an integer number (831250393008).

Almost surely, 2^{20028865945132} is an apocalyptic number.

20028865945132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20028865945132 is a deficient number, since it is larger than the sum of its proper divisors (19871152919252).

20028865945132 is a wasteful number, since it uses less digits than its factorization.

20028865945132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306550 (or 306548 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 55.

The spelling of 20028865945132 in words is "twenty trillion, twenty-eight billion, eight hundred sixty-five million, nine hundred forty-five thousand, one hundred thirty-two".