27945000754638 has 32 divisors (see below), whose sum is σ = 64179906042240. Its totient is φ = 8022488254560.

The previous prime is 27945000754589. The next prime is 27945000754663. The reversal of 27945000754638 is 83645700054972.

It is a super-2 number, since 2×27945000754638² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11142343545 + ... + 11142346052.

It is an arithmetic number, because the mean of its divisors is an integer number (2005622063820).

Almost surely, 2^{27945000754638} is an apocalyptic number.

27945000754638 is an abundant number, since it is smaller than the sum of its proper divisors (36234905287602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27945000754638 is a wasteful number, since it uses less digits than its factorization.

27945000754638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22284689632.

The product of its (nonzero) digits is 50803200, while the sum is 60.

The spelling of 27945000754638 in words is "twenty-seven trillion, nine hundred forty-five billion, seven hundred fifty-four thousand, six hundred thirty-eight".