27644340126 has 16 divisors (see below), whose sum is σ = 59541655824. Its totient is φ = 8505950784.

The previous prime is 27644340121. The next prime is 27644340127. The reversal of 27644340126 is 62104344672.

27644340126 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27644340121) 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, 177207231 + ... + 177207386.

It is an arithmetic number, because the mean of its divisors is an integer number (3721353489).

Almost surely, 2^27644340126 is an apocalyptic number.

27644340126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

27644340126 is an abundant number, since it is smaller than the sum of its proper divisors (31897315698).

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

27644340126 is a wasteful number, since it uses less digits than its factorization.

27644340126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354414635.

The product of its (nonzero) digits is 193536, while the sum is 39.

Adding to 27644340126 its reverse (62104344672), we get a palindrome (89748684798).

The spelling of 27644340126 in words is "twenty-seven billion, six hundred forty-four million, three hundred forty thousand, one hundred twenty-six".