28161453877632 has 48 divisors (see below), whose sum is σ = 81037517020980. Its totient is φ = 9387151292160.

The previous prime is 28161453877603. The next prime is 28161453877681. The reversal of 28161453877632 is 23677835416182.

It is a happy number.

28161453877632 is a `hidden beast` number, since 2 + 8 + 1 + 6 + 1 + 453 + 87 + 76 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 28161453877632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12222852094 + ... + 12222854397.

Almost surely, 2^{28161453877632} is an apocalyptic number.

It is an amenable number.

28161453877632 is an abundant number, since it is smaller than the sum of its proper divisors (52876063143348).

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

28161453877632 is a wasteful number, since it uses less digits than its factorization.

28161453877632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24445706511 (or 24445706496 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 63.

The spelling of 28161453877632 in words is "twenty-eight trillion, one hundred sixty-one billion, four hundred fifty-three million, eight hundred seventy-seven thousand, six hundred thirty-two".