27253624949 has 4 divisors (see below), whose sum is σ = 27268054380. Its totient is φ = 27239195520.

The previous prime is 27253624927. The next prime is 27253624961. The reversal of 27253624949 is 94942635272.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16316230225 + 10937394724 = 127735^2 + 104582^2 .

It is a cyclic number.

It is not a de Polignac number, because 27253624949 - 2¹² = 27253620853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27253624949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27253624049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7211882 + ... + 7215659.

It is an arithmetic number, because the mean of its divisors is an integer number (6817013595).

Almost surely, 2^27253624949 is an apocalyptic number.

It is an amenable number.

27253624949 is a deficient number, since it is larger than the sum of its proper divisors (14429431).

27253624949 is a wasteful number, since it uses less digits than its factorization.

27253624949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14429430.

The product of its digits is 6531840, while the sum is 53.

The spelling of 27253624949 in words is "twenty-seven billion, two hundred fifty-three million, six hundred twenty-four thousand, nine hundred forty-nine".