27156601272 has 32 divisors (see below), whose sum is σ = 68002292880. Its totient is φ = 9037428480.

The previous prime is 27156601271. The next prime is 27156601309. The reversal of 27156601272 is 27210665172.

It is a self number, because there is not a number n which added to its sum of digits gives 27156601272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27156601271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 908229 + ... + 937652.

Almost surely, 2^27156601272 is an apocalyptic number.

It is an amenable number.

27156601272 is an abundant number, since it is smaller than the sum of its proper divisors (40845691608).

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

27156601272 is a wasteful number, since it uses less digits than its factorization.

27156601272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846503 (or 1846499 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The spelling of 27156601272 in words is "twenty-seven billion, one hundred fifty-six million, six hundred one thousand, two hundred seventy-two".