28167146696529 has 45 divisors (see below), whose sum is σ = 43987532982393. Its totient is φ = 17960958202968.

The previous prime is 28167146696489. The next prime is 28167146696551. The reversal of 28167146696529 is 92569664176182.

The square root of 28167146696529 is 5307273.

It is a perfect power (a square), and thus also a powerful number.

28167146696529 is a `hidden beast` number, since 2 + 8 + 1 + 6 + 7 + 1 + 4 + 6 + 6 + 96 + 529 = 666.

It is not a de Polignac number, because 28167146696529 - 2¹⁷ = 28167146565457 is a prime.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28167146691529) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1098592692 + ... + 1098618330.

Almost surely, 2^{28167146696529} is an apocalyptic number.

28167146696529 is the 5307273-rd square number.

28167146696529 is the 2653637-th centered octagonal number.

It is an amenable number.

28167146696529 is a deficient number, since it is larger than the sum of its proper divisors (15820386285864).

28167146696529 is an frugal number, since it uses more digits than its factorization.

28167146696529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51336 (or 25665 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 72.

The spelling of 28167146696529 in words is "twenty-eight trillion, one hundred sixty-seven billion, one hundred forty-six million, six hundred ninety-six thousand, five hundred twenty-nine".