27434042551 has 16 divisors (see below), whose sum is σ = 28329200640. Its totient is φ = 26553463200.

The previous prime is 27434042509. The next prime is 27434042561. The reversal of 27434042551 is 15524043472.

It is a cyclic number.

It is not a de Polignac number, because 27434042551 - 2⁹ = 27434042039 is a prime.

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 27434042551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27434042561) 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 15 ways as a sum of consecutive naturals, for example, 1602505 + ... + 1619533.

It is an arithmetic number, because the mean of its divisors is an integer number (1770575040).

Almost surely, 2^27434042551 is an apocalyptic number.

27434042551 is a deficient number, since it is larger than the sum of its proper divisors (895158089).

27434042551 is a wasteful number, since it uses less digits than its factorization.

27434042551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17454.

The product of its (nonzero) digits is 134400, while the sum is 37.

The spelling of 27434042551 in words is "twenty-seven billion, four hundred thirty-four million, forty-two thousand, five hundred fifty-one".