28097129766 has 8 divisors (see below), whose sum is σ = 56194259544. Its totient is φ = 9365709920.

The previous prime is 28097129717. The next prime is 28097129777. The reversal of 28097129766 is 66792179082.

It is a sphenic number, since it is the product of 3 distinct primes.

28097129766 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2341427475 + ... + 2341427486.

It is an arithmetic number, because the mean of its divisors is an integer number (7024282443).

Almost surely, 2^28097129766 is an apocalyptic number.

28097129766 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28097129766 is a wasteful number, since it uses less digits than its factorization.

28097129766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4682854966.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The spelling of 28097129766 in words is "twenty-eight billion, ninety-seven million, one hundred twenty-nine thousand, seven hundred sixty-six".