27378021012 has 48 divisors (see below), whose sum is σ = 64877890560. Its totient is φ = 8984413152.

The previous prime is 27378021007. The next prime is 27378021071. The reversal of 27378021012 is 21012087372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 287343 + ... + 370569.

It is an arithmetic number, because the mean of its divisors is an integer number (1351622720).

Almost surely, 2^27378021012 is an apocalyptic number.

It is an amenable number.

27378021012 is an abundant number, since it is smaller than the sum of its proper divisors (37499869548).

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

27378021012 is a wasteful number, since it uses less digits than its factorization.

27378021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83660 (or 83658 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The spelling of 27378021012 in words is "twenty-seven billion, three hundred seventy-eight million, twenty-one thousand, twelve".