27878979168948 has 24 divisors (see below), whose sum is σ = 65106885176928. Its totient is φ = 9285002515936.

The previous prime is 27878979168899. The next prime is 27878979168977. The reversal of 27878979168948 is 84986197987872.

It is a congruent 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, 998803011 + ... + 998830922.

It is an arithmetic number, because the mean of its divisors is an integer number (2712786882372).

Almost surely, 2^{27878979168948} is an apocalyptic number.

It is an amenable number.

27878979168948 is an abundant number, since it is smaller than the sum of its proper divisors (37227906007980).

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

27878979168948 is a wasteful number, since it uses less digits than its factorization.

27878979168948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997635103 (or 1997635101 counting only the distinct ones).

The product of its digits is 49161240576, while the sum is 93.

The spelling of 27878979168948 in words is "twenty-seven trillion, eight hundred seventy-eight billion, nine hundred seventy-nine million, one hundred sixty-eight thousand, nine hundred forty-eight".