28105062669 has 16 divisors (see below), whose sum is σ = 42104966400. Its totient is φ = 18526182048.

The previous prime is 28105062607. The next prime is 28105062701. The reversal of 28105062669 is 96626050182.

28105062669 is a `hidden beast` number, since 2 + 8 + 10 + 5 + 0 + 626 + 6 + 9 = 666.

It is not a de Polignac number, because 28105062669 - 2⁸ = 28105062413 is a prime.

It is a super-2 number, since 2×28105062669² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28105062169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5845509 + ... + 5850314.

It is an arithmetic number, because the mean of its divisors is an integer number (2631560400).

Almost surely, 2^28105062669 is an apocalyptic number.

It is an amenable number.

28105062669 is a deficient number, since it is larger than the sum of its proper divisors (13999903731).

28105062669 is a wasteful number, since it uses less digits than its factorization.

28105062669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11695921 (or 11695915 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 28105062669 in words is "twenty-eight billion, one hundred five million, sixty-two thousand, six hundred sixty-nine".