27542436403639 has 8 divisors (see below), whose sum is σ = 28992097733040. Its totient is φ = 26092781015616.

The previous prime is 27542436403633. The next prime is 27542436403697. The reversal of 27542436403639 is 93630463424572.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27542436403639 - 2¹⁵ = 27542436370871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27542436403633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10516857 + ... + 12872029.

It is an arithmetic number, because the mean of its divisors is an integer number (3624012216630).

Almost surely, 2^{27542436403639} is an apocalyptic number.

27542436403639 is a deficient number, since it is larger than the sum of its proper divisors (1449661329401).

27542436403639 is a wasteful number, since it uses less digits than its factorization.

27542436403639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970689.

The product of its (nonzero) digits is 78382080, while the sum is 58.

The spelling of 27542436403639 in words is "twenty-seven trillion, five hundred forty-two billion, four hundred thirty-six million, four hundred three thousand, six hundred thirty-nine".