27919800912 has 40 divisors (see below), whose sum is σ = 72441142240. Its totient is φ = 9265956480.

The previous prime is 27919800889. The next prime is 27919800919. The reversal of 27919800912 is 21900891972.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27919800919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1259014 + ... + 1280997.

It is an arithmetic number, because the mean of its divisors is an integer number (1811028556).

Almost surely, 2^27919800912 is an apocalyptic number.

It is an amenable number.

27919800912 is an abundant number, since it is smaller than the sum of its proper divisors (44521341328).

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

27919800912 is a wasteful number, since it uses less digits than its factorization.

27919800912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540251 (or 2540245 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 48.

The spelling of 27919800912 in words is "twenty-seven billion, nine hundred nineteen million, eight hundred thousand, nine hundred twelve".