27047821275 has 36 divisors (see below), whose sum is σ = 49168750072. Its totient is φ = 14210190720.

The previous prime is 27047821271. The next prime is 27047821277. The reversal of 27047821275 is 57212874072.

It is not a de Polignac number, because 27047821275 - 2² = 27047821271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27047821275.

It is not an unprimeable number, because it can be changed into a prime (27047821271) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 882034 + ... + 912183.

Almost surely, 2^27047821275 is an apocalyptic number.

27047821275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

27047821275 is a deficient number, since it is larger than the sum of its proper divisors (22120928797).

27047821275 is a wasteful number, since it uses less digits than its factorization.

27047821275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794300 (or 1794292 counting only the distinct ones).

The product of its (nonzero) digits is 439040, while the sum is 45.

The spelling of 27047821275 in words is "twenty-seven billion, forty-seven million, eight hundred twenty-one thousand, two hundred seventy-five".