28137234488311 has 4 divisors (see below), whose sum is σ = 30301637141272. Its totient is φ = 25972831835352.

The previous prime is 28137234488281. The next prime is 28137234488339. The reversal of 28137234488311 is 11388443273182.

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 28137234488311 - 2⁹ = 28137234487799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28137234488411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1082201326461 + ... + 1082201326486.

It is an arithmetic number, because the mean of its divisors is an integer number (7575409285318).

Almost surely, 2^{28137234488311} is an apocalyptic number.

28137234488311 is a deficient number, since it is larger than the sum of its proper divisors (2164402652961).

28137234488311 is a wasteful number, since it uses less digits than its factorization.

28137234488311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164402652960.

The product of its digits is 6193152, while the sum is 55.

The spelling of 28137234488311 in words is "twenty-eight trillion, one hundred thirty-seven billion, two hundred thirty-four million, four hundred eighty-eight thousand, three hundred eleven".