28135010138 has 16 divisors (see below), whose sum is σ = 42463125504. Its totient is φ = 13980773040.

The previous prime is 28135010117. The next prime is 28135010143. The reversal of 28135010138 is 83101053182.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381356 + ... + 449112.

It is an arithmetic number, because the mean of its divisors is an integer number (2653945344).

Almost surely, 2^28135010138 is an apocalyptic number.

28135010138 is a deficient number, since it is larger than the sum of its proper divisors (14328115366).

28135010138 is a wasteful number, since it uses less digits than its factorization.

28135010138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69037.

The product of its (nonzero) digits is 5760, while the sum is 32.

The spelling of 28135010138 in words is "twenty-eight billion, one hundred thirty-five million, ten thousand, one hundred thirty-eight".