28135376134 has 4 divisors (see below), whose sum is σ = 42203064204. Its totient is φ = 14067688066.

The previous prime is 28135376119. The next prime is 28135376141. The reversal of 28135376134 is 43167353182.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43167353182 = 2 ⋅21583676591.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7033844032 + ... + 7033844035.

It is an arithmetic number, because the mean of its divisors is an integer number (10550766051).

Almost surely, 2^28135376134 is an apocalyptic number.

28135376134 is a deficient number, since it is larger than the sum of its proper divisors (14067688070).

28135376134 is a wasteful number, since it uses less digits than its factorization.

28135376134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14067688069.

The product of its digits is 362880, while the sum is 43.

The spelling of 28135376134 in words is "twenty-eight billion, one hundred thirty-five million, three hundred seventy-six thousand, one hundred thirty-four".