27745886523 has 8 divisors (see below), whose sum is σ = 38941595200. Its totient is φ = 17523717768.

The previous prime is 27745886513. The next prime is 27745886527. The reversal of 27745886523 is 32568854772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27745886523 - 2¹³ = 27745878331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 486769939 = 27745886523 / (2 + 7 + 7 + 4 + 5 + 8 + 8 + 6 + 5 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27745886527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243384913 + ... + 243385026.

It is an arithmetic number, because the mean of its divisors is an integer number (4867699400).

Almost surely, 2^27745886523 is an apocalyptic number.

27745886523 is a deficient number, since it is larger than the sum of its proper divisors (11195708677).

27745886523 is a wasteful number, since it uses less digits than its factorization.

27745886523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486769961.

The product of its digits is 22579200, while the sum is 57.

The spelling of 27745886523 in words is "twenty-seven billion, seven hundred forty-five million, eight hundred eighty-six thousand, five hundred twenty-three".