27937210654081 has 4 divisors (see below), whose sum is σ = 29580575986692. Its totient is φ = 26293845321472.

The previous prime is 27937210654079. The next prime is 27937210654127. The reversal of 27937210654081 is 18045601273972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12438029044081 + 15499181610000 = 3526759^2 + 3936900^2 .

It is not a de Polignac number, because 27937210654081 - 2¹ = 27937210654079 is a prime.

It is a super-4 number, since 4×27937210654081⁴ (a number of 55 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27937210684081) 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 3 ways as a sum of consecutive naturals, for example, 821682666280 + ... + 821682666313.

It is an arithmetic number, because the mean of its divisors is an integer number (7395143996673).

It is a 1-persistent number, because it is pandigital, but 2⋅27937210654081 = 55874421308162 is not.

Almost surely, 2^{27937210654081} is an apocalyptic number.

It is an amenable number.

27937210654081 is a deficient number, since it is larger than the sum of its proper divisors (1643365332611).

27937210654081 is a wasteful number, since it uses less digits than its factorization.

27937210654081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643365332610.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 27937210654081 in words is "twenty-seven trillion, nine hundred thirty-seven billion, two hundred ten million, six hundred fifty-four thousand, eighty-one".