28766651251700 has 18 divisors (see below), whose sum is σ = 62423633216406. Its totient is φ = 11506660500640.

The previous prime is 28766651251699. The next prime is 28766651251729. The reversal of 28766651251700 is 715215666782.

It can be written as a sum of positive squares in 3 ways, for example, as 67445128804 + 28699206122896 = 259702^2 + 5357164^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 143833256159 + ... + 143833256358.

Almost surely, 2^{28766651251700} is an apocalyptic number.

28766651251700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28766651251700 is an abundant number, since it is smaller than the sum of its proper divisors (33656981964706).

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

28766651251700 is a wasteful number, since it uses less digits than its factorization.

28766651251700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287666512531 (or 287666512524 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 28766651251700 in words is "twenty-eight trillion, seven hundred sixty-six billion, six hundred fifty-one million, two hundred fifty-one thousand, seven hundred".