28027660961 has 8 divisors (see below), whose sum is σ = 28131033600. Its totient is φ = 27924429600.

The previous prime is 28027660909. The next prime is 28027661017. The reversal of 28027660961 is 16906672082.

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 28027660961 - 2¹⁰ = 28027659937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28027660261) 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, 370736 + ... + 439886.

It is an arithmetic number, because the mean of its divisors is an integer number (3516379200).

Almost surely, 2^28027660961 is an apocalyptic number.

It is an amenable number.

28027660961 is a deficient number, since it is larger than the sum of its proper divisors (103372639).

28027660961 is a wasteful number, since it uses less digits than its factorization.

28027660961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70639.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 28027660961 in words is "twenty-eight billion, twenty-seven million, six hundred sixty thousand, nine hundred sixty-one".