27493920689555 has 16 divisors (see below), whose sum is σ = 35849458560000. Its totient is φ = 20165320435680.

The previous prime is 27493920689551. The next prime is 27493920689561. The reversal of 27493920689555 is 55598602939472.

It is not a de Polignac number, because 27493920689555 - 2² = 27493920689551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27493920689551) 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 15 ways as a sum of consecutive naturals, for example, 4667895305 + ... + 4667901194.

It is an arithmetic number, because the mean of its divisors is an integer number (2240591160000).

Almost surely, 2^{27493920689555} is an apocalyptic number.

27493920689555 is a deficient number, since it is larger than the sum of its proper divisors (8355537870445).

27493920689555 is a wasteful number, since it uses less digits than its factorization.

27493920689555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9335796554.

The product of its (nonzero) digits is 1469664000, while the sum is 74.

The spelling of 27493920689555 in words is "twenty-seven trillion, four hundred ninety-three billion, nine hundred twenty million, six hundred eighty-nine thousand, five hundred fifty-five".