28695322137 has 16 divisors (see below), whose sum is σ = 39054607488. Its totient is φ = 18735818880.

The previous prime is 28695322133. The next prime is 28695322141. The reversal of 28695322137 is 73122359682.

It is an interprime number because it is at equal distance from previous prime (28695322133) and next prime (28695322141).

It is not a de Polignac number, because 28695322137 - 2² = 28695322133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28695322133) 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, 293853 + ... + 379130.

It is an arithmetic number, because the mean of its divisors is an integer number (2440912968).

Almost surely, 2^28695322137 is an apocalyptic number.

It is an amenable number.

28695322137 is a deficient number, since it is larger than the sum of its proper divisors (10359285351).

28695322137 is a wasteful number, since it uses less digits than its factorization.

28695322137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673280.

The product of its digits is 1088640, while the sum is 48.

The spelling of 28695322137 in words is "twenty-eight billion, six hundred ninety-five million, three hundred twenty-two thousand, one hundred thirty-seven".