28837531512001 has 4 divisors (see below), whose sum is σ = 28841419551172. Its totient is φ = 28833643472832.

The previous prime is 28837531511989. The next prime is 28837531512011. The reversal of 28837531512001 is 10021513573882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26057145344400 + 2780386167601 = 5104620^2 + 1667449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28837531512001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28837531512011) 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, 1944008460 + ... + 1944023293.

It is an arithmetic number, because the mean of its divisors is an integer number (7210354887793).

Almost surely, 2^{28837531512001} is an apocalyptic number.

It is an amenable number.

28837531512001 is a deficient number, since it is larger than the sum of its proper divisors (3888039171).

28837531512001 is an equidigital number, since it uses as much as digits as its factorization.

28837531512001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3888039170.

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 28837531512001 in words is "twenty-eight trillion, eight hundred thirty-seven billion, five hundred thirty-one million, five hundred twelve thousand, one".