28595537961 has 4 divisors (see below), whose sum is σ = 38127383952. Its totient is φ = 19063691972.

The previous prime is 28595537959. The next prime is 28595537977. The reversal of 28595537961 is 16973559582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28595537961 - 2¹ = 28595537959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28595537895 and 28595537904.

It is not an unprimeable number, because it can be changed into a prime (28595537941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4765922991 + ... + 4765922996.

It is an arithmetic number, because the mean of its divisors is an integer number (9531845988).

Almost surely, 2^28595537961 is an apocalyptic number.

It is an amenable number.

28595537961 is a deficient number, since it is larger than the sum of its proper divisors (9531845991).

28595537961 is an equidigital number, since it uses as much as digits as its factorization.

28595537961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9531845990.

The product of its digits is 20412000, while the sum is 60.

The spelling of 28595537961 in words is "twenty-eight billion, five hundred ninety-five million, five hundred thirty-seven thousand, nine hundred sixty-one".