27479077848 has 128 divisors (see below), whose sum is σ = 81357696000. Its totient is φ = 8563622400.

The previous prime is 27479077811. The next prime is 27479077903. The reversal of 27479077848 is 84877097472.

It is a super-2 number, since 2×27479077848² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 529693 + ... + 579251.

It is an arithmetic number, because the mean of its divisors is an integer number (635607000).

Almost surely, 2^27479077848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27479077848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40678848000).

27479077848 is an abundant number, since it is smaller than the sum of its proper divisors (53878618152).

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

27479077848 is a wasteful number, since it uses less digits than its factorization.

27479077848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49742 (or 49732 counting only the distinct ones).

The product of its (nonzero) digits is 44255232, while the sum is 63.

The spelling of 27479077848 in words is "twenty-seven billion, four hundred seventy-nine million, seventy-seven thousand, eight hundred forty-eight".