28197094965 has 64 divisors (see below), whose sum is σ = 51558135552. Its totient is φ = 13036032000.

The previous prime is 28197094963. The next prime is 28197094969. The reversal of 28197094965 is 56949079182.

It is not a de Polignac number, because 28197094965 - 2¹ = 28197094963 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28197094899 and 28197094908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28197094963) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1518990 + ... + 1537440.

It is an arithmetic number, because the mean of its divisors is an integer number (805595868).

Almost surely, 2^28197094965 is an apocalyptic number.

It is an amenable number.

28197094965 is a deficient number, since it is larger than the sum of its proper divisors (23361040587).

28197094965 is a wasteful number, since it uses less digits than its factorization.

28197094965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18950.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 28197094965 in words is "twenty-eight billion, one hundred ninety-seven million, ninety-four thousand, nine hundred sixty-five".