28501750112631 has 4 divisors (see below), whose sum is σ = 38002333483512. Its totient is φ = 19001166741752.

The previous prime is 28501750112587. The next prime is 28501750112653. The reversal of 28501750112631 is 13621105710582.

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

It is a cyclic number.

It is not a de Polignac number, because 28501750112631 - 2³⁸ = 28226872205687 is a prime.

It is a super-2 number, since 2×28501750112631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28501750111631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4750291685436 + ... + 4750291685441.

It is an arithmetic number, because the mean of its divisors is an integer number (9500583370878).

Almost surely, 2^{28501750112631} is an apocalyptic number.

28501750112631 is a deficient number, since it is larger than the sum of its proper divisors (9500583370881).

28501750112631 is an equidigital number, since it uses as much as digits as its factorization.

28501750112631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9500583370880.

The product of its (nonzero) digits is 100800, while the sum is 42.

The spelling of 28501750112631 in words is "twenty-eight trillion, five hundred one billion, seven hundred fifty million, one hundred twelve thousand, six hundred thirty-one".