28123063389504 has 56 divisors (see below), whose sum is σ = 82676598395520. Its totient is φ = 9374354462592.

The previous prime is 28123063389493. The next prime is 28123063389521. The reversal of 28123063389504 is 40598336032182.

28123063389504 is a `hidden beast` number, since 2 + 8 + 1 + 23 + 0 + 6 + 33 + 89 + 504 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8137458744 + ... + 8137462199.

Almost surely, 2^{28123063389504} is an apocalyptic number.

28123063389504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28123063389504 is an abundant number, since it is smaller than the sum of its proper divisors (54553535006016).

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

28123063389504 is a wasteful number, since it uses less digits than its factorization.

28123063389504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16274920964 (or 16274920948 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 28123063389504 in words is "twenty-eight trillion, one hundred twenty-three billion, sixty-three million, three hundred eighty-nine thousand, five hundred four".