27078120972 has 144 divisors (see below), whose sum is σ = 79554721792. Its totient is φ = 7605861120.

The previous prime is 27078120967. The next prime is 27078120973. The reversal of 27078120972 is 27902187072.

It is not an unprimeable number, because it can be changed into a prime (27078120973) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 6086853 + ... + 6091299.

Almost surely, 2^27078120972 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 27078120972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39777360896).

27078120972 is an abundant number, since it is smaller than the sum of its proper divisors (52476600820).

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

27078120972 is a wasteful number, since it uses less digits than its factorization.

27078120972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868 (or 4863 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The spelling of 27078120972 in words is "twenty-seven billion, seventy-eight million, one hundred twenty thousand, nine hundred seventy-two".