27723850545 has 16 divisors (see below), whose sum is σ = 44603237952. Its totient is φ = 14704361280.

The previous prime is 27723850541. The next prime is 27723850547. The reversal of 27723850545 is 54505832772.

It is not a de Polignac number, because 27723850545 - 2² = 27723850541 is a prime.

It is a super-2 number, since 2×27723850545² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27723850494 and 27723850503.

It is not an unprimeable number, because it can be changed into a prime (27723850541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5102967 + ... + 5108396.

It is an arithmetic number, because the mean of its divisors is an integer number (2787702372).

Almost surely, 2^27723850545 is an apocalyptic number.

It is an amenable number.

27723850545 is a deficient number, since it is larger than the sum of its proper divisors (16879387407).

27723850545 is a wasteful number, since it uses less digits than its factorization.

27723850545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211552.

The product of its (nonzero) digits is 2352000, while the sum is 48.

The spelling of 27723850545 in words is "twenty-seven billion, seven hundred twenty-three million, eight hundred fifty thousand, five hundred forty-five".