27874099638 has 48 divisors (see below), whose sum is σ = 75296272896. Its totient is φ = 7240025520.

The previous prime is 27874099637. The next prime is 27874099667. The reversal of 27874099638 is 83699047872.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27874099637) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 10054206 + ... + 10056977.

It is an arithmetic number, because the mean of its divisors is an integer number (1568672352).

Almost surely, 2^27874099638 is an apocalyptic number.

27874099638 is an abundant number, since it is smaller than the sum of its proper divisors (47422173258).

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

27874099638 is a wasteful number, since it uses less digits than its factorization.

27874099638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20111209 (or 20111206 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 27874099638 in words is "twenty-seven billion, eight hundred seventy-four million, ninety-nine thousand, six hundred thirty-eight".