28163742051628 has 24 divisors (see below), whose sum is σ = 49324603628160. Its totient is φ = 14071002147840.

The previous prime is 28163742051611. The next prime is 28163742051629. The reversal of 28163742051628 is 82615024736182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28163742051629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27894258 + ... + 28886278.

It is an arithmetic number, because the mean of its divisors is an integer number (2055191817840).

Almost surely, 2^{28163742051628} is an apocalyptic number.

It is an amenable number.

28163742051628 is a deficient number, since it is larger than the sum of its proper divisors (21160861576532).

28163742051628 is a wasteful number, since it uses less digits than its factorization.

28163742051628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997497 (or 997495 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 28163742051628 in words is "twenty-eight trillion, one hundred sixty-three billion, seven hundred forty-two million, fifty-one thousand, six hundred twenty-eight".