27875378958 has 64 divisors (see below), whose sum is σ = 67616156160. Its totient is φ = 7478894592.

The previous prime is 27875378939. The next prime is 27875378959. The reversal of 27875378958 is 85987357872.

It is a junction number, because it is equal to n+sod(n) for n = 27875378892 and 27875378901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27875378959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 272238 + ... + 360366.

It is an arithmetic number, because the mean of its divisors is an integer number (1056502440).

Almost surely, 2^27875378958 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27875378958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33808078080).

27875378958 is an abundant number, since it is smaller than the sum of its proper divisors (39740777202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27875378958 is a wasteful number, since it uses less digits than its factorization.

27875378958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88601.

The product of its digits is 237081600, while the sum is 69.

The spelling of 27875378958 in words is "twenty-seven billion, eight hundred seventy-five million, three hundred seventy-eight thousand, nine hundred fifty-eight".