27724919949 has 16 divisors (see below), whose sum is σ = 41497402240. Its totient is φ = 18292728960.

The previous prime is 27724919939. The next prime is 27724919953. The reversal of 27724919949 is 94991942772.

It is not a de Polignac number, because 27724919949 - 2¹³ = 27724911757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27724919939) 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, 5290417 + ... + 5295654.

It is an arithmetic number, because the mean of its divisors is an integer number (2593587640).

Almost surely, 2^27724919949 is an apocalyptic number.

It is an amenable number.

27724919949 is a deficient number, since it is larger than the sum of its proper divisors (13772482291).

27724919949 is a wasteful number, since it uses less digits than its factorization.

27724919949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10586177 (or 10586171 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 63.

The spelling of 27724919949 in words is "twenty-seven billion, seven hundred twenty-four million, nine hundred nineteen thousand, nine hundred forty-nine".