27727123445 has 16 divisors (see below), whose sum is σ = 39337004160. Its totient is φ = 18357267264.

The previous prime is 27727123429. The next prime is 27727123451. The reversal of 27727123445 is 54432172772.

It is a happy number.

It is not a de Polignac number, because 27727123445 - 2⁴ = 27727123429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27727123396 and 27727123405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13657667 + ... + 13659696.

It is an arithmetic number, because the mean of its divisors is an integer number (2458562760).

Almost surely, 2^27727123445 is an apocalyptic number.

It is an amenable number.

27727123445 is a deficient number, since it is larger than the sum of its proper divisors (11609880715).

27727123445 is a wasteful number, since it uses less digits than its factorization.

27727123445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27317404.

The product of its digits is 658560, while the sum is 44.

It can be divided in two parts, 2772 and 7123445, that added together give a palindrome (7126217).

The spelling of 27727123445 in words is "twenty-seven billion, seven hundred twenty-seven million, one hundred twenty-three thousand, four hundred forty-five".