28619841969 has 16 divisors (see below), whose sum is σ = 42408080640. Its totient is φ = 19076153040.

The previous prime is 28619841967. The next prime is 28619842001. The reversal of 28619841969 is 96914891682.

28619841969 is a `hidden beast` number, since 2 + 8 + 619 + 8 + 4 + 1 + 9 + 6 + 9 = 666.

It is not a de Polignac number, because 28619841969 - 2¹ = 28619841967 is a prime.

It is a super-2 number, since 2×28619841969² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28619841967) 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, 39919 + ... + 242555.

It is an arithmetic number, because the mean of its divisors is an integer number (2650505040).

Almost surely, 2^28619841969 is an apocalyptic number.

It is an amenable number.

28619841969 is a deficient number, since it is larger than the sum of its proper divisors (13788238671).

28619841969 is a wasteful number, since it uses less digits than its factorization.

28619841969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207877 (or 207871 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 63.

The spelling of 28619841969 in words is "twenty-eight billion, six hundred nineteen million, eight hundred forty-one thousand, nine hundred sixty-nine".