28665106726458 has 64 divisors (see below), whose sum is σ = 57559788748800. Its totient is φ = 9516870740160.

The previous prime is 28665106726439. The next prime is 28665106726463. The reversal of 28665106726458 is 85462760156682.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3449052123 + ... + 3449060433.

It is an arithmetic number, because the mean of its divisors is an integer number (899371699200).

Almost surely, 2^{28665106726458} is an apocalyptic number.

28665106726458 is an abundant number, since it is smaller than the sum of its proper divisors (28894682022342).

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

28665106726458 is a wasteful number, since it uses less digits than its factorization.

28665106726458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10987.

The product of its (nonzero) digits is 232243200, while the sum is 66.

The spelling of 28665106726458 in words is "twenty-eight trillion, six hundred sixty-five billion, one hundred six million, seven hundred twenty-six thousand, four hundred fifty-eight".