27938143758028 has 12 divisors (see below), whose sum is σ = 55876287516112. Its totient is φ = 11973490182000.

The previous prime is 27938143757977. The next prime is 27938143758073. The reversal of 27938143758028 is 82085734183972.

27938143758028 is an admirable number.

It is a super-2 number, since 2×27938143758028² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 498895424223 + ... + 498895424278.

Almost surely, 2^{27938143758028} is an apocalyptic number.

27938143758028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27938143758028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27938143758028 is a wasteful number, since it uses less digits than its factorization.

27938143758028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997790848512 (or 997790848510 counting only the distinct ones).

The product of its (nonzero) digits is 162570240, while the sum is 67.

The spelling of 27938143758028 in words is "twenty-seven trillion, nine hundred thirty-eight billion, one hundred forty-three million, seven hundred fifty-eight thousand, twenty-eight".