27047156451 has 64 divisors (see below), whose sum is σ = 44429414400. Its totient is φ = 14284947456.

The previous prime is 27047156447. The next prime is 27047156467. The reversal of 27047156451 is 15465174072.

It is not a de Polignac number, because 27047156451 - 2² = 27047156447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27047156351) 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 63 ways as a sum of consecutive naturals, for example, 5440695 + ... + 5445663.

It is an arithmetic number, because the mean of its divisors is an integer number (694209600).

Almost surely, 2^27047156451 is an apocalyptic number.

27047156451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27047156451 is a deficient number, since it is larger than the sum of its proper divisors (17382257949).

27047156451 is a wasteful number, since it uses less digits than its factorization.

27047156451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 27047156451 in words is "twenty-seven billion, forty-seven million, one hundred fifty-six thousand, four hundred fifty-one".