28147927167801 has 24 divisors (see below), whose sum is σ = 46468354108800. Its totient is φ = 16083860121216.

The previous prime is 28147927167799. The next prime is 28147927167851. The reversal of 28147927167801 is 10876172974182.

28147927167801 is a `hidden beast` number, since 2 + 8 + 1 + 479 + 27 + 1 + 67 + 80 + 1 = 666.

It is not a de Polignac number, because 28147927167801 - 2¹ = 28147927167799 is a prime.

It is a super-2 number, since 2×28147927167801² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (28147927167851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7774125 + ... + 10804298.

It is an arithmetic number, because the mean of its divisors is an integer number (1936181421200).

Almost surely, 2^{28147927167801} is an apocalyptic number.

28147927167801 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28147927167801 is a deficient number, since it is larger than the sum of its proper divisors (18320426940999).

28147927167801 is a wasteful number, since it uses less digits than its factorization.

28147927167801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18602485 (or 18602482 counting only the distinct ones).

The product of its (nonzero) digits is 18966528, while the sum is 63.

The spelling of 28147927167801 in words is "twenty-eight trillion, one hundred forty-seven billion, nine hundred twenty-seven million, one hundred sixty-seven thousand, eight hundred one".