28639376901 has 16 divisors (see below), whose sum is σ = 42665745600. Its totient is φ = 18986250384.

The previous prime is 28639376897. The next prime is 28639376947. The reversal of 28639376901 is 10967393682.

It is not a de Polignac number, because 28639376901 - 2² = 28639376897 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28639376981) 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, 2958066 + ... + 2967731.

It is an arithmetic number, because the mean of its divisors is an integer number (2666609100).

Almost surely, 2^28639376901 is an apocalyptic number.

It is an amenable number.

28639376901 is a deficient number, since it is larger than the sum of its proper divisors (14026368699).

28639376901 is a wasteful number, since it uses less digits than its factorization.

28639376901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925985 (or 5925979 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 28639376901 in words is "twenty-eight billion, six hundred thirty-nine million, three hundred seventy-six thousand, nine hundred one".