28166940504001 has 8 divisors (see below), whose sum is σ = 30354027467904. Its totient is φ = 25982767716240.

The previous prime is 28166940503971. The next prime is 28166940504089. The reversal of 28166940504001 is 10040504966182.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28166940504001 - 2²⁹ = 28166403633089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28166940501001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728523955 + ... + 728562616.

It is an arithmetic number, because the mean of its divisors is an integer number (3794253433488).

Almost surely, 2^{28166940504001} is an apocalyptic number.

It is an amenable number.

28166940504001 is a deficient number, since it is larger than the sum of its proper divisors (2187086963903).

28166940504001 is a wasteful number, since it uses less digits than its factorization.

28166940504001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457088071.

The product of its (nonzero) digits is 414720, while the sum is 46.

The spelling of 28166940504001 in words is "twenty-eight trillion, one hundred sixty-six billion, nine hundred forty million, five hundred four thousand, one".