27640126389 has 16 divisors (see below), whose sum is σ = 36950736512. Its totient is φ = 18378171648.

The previous prime is 27640126363. The next prime is 27640126399. The reversal of 27640126389 is 98362104672.

It is not a de Polignac number, because 27640126389 - 2⁵ = 27640126357 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27640126309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5403297 + ... + 5408409.

It is an arithmetic number, because the mean of its divisors is an integer number (2309421032).

Almost surely, 2^27640126389 is an apocalyptic number.

It is an amenable number.

27640126389 is a deficient number, since it is larger than the sum of its proper divisors (9310610123).

27640126389 is a wasteful number, since it uses less digits than its factorization.

27640126389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9516.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 27640126389 in words is "twenty-seven billion, six hundred forty million, one hundred twenty-six thousand, three hundred eighty-nine".