27144264949 has 4 divisors (see below), whose sum is σ = 27449256780. Its totient is φ = 26839273120.

The previous prime is 27144264947. The next prime is 27144264997. The reversal of 27144264949 is 94946244172.

It is a happy number.

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 6645184324 + 20499080625 = 81518^2 + 143175^2 .

It is a cyclic number.

It is not a de Polignac number, because 27144264949 - 2¹ = 27144264947 is a prime.

It is a super-2 number, since 2×27144264949² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27144264896 and 27144264905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27144264941) 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, 152495782 + ... + 152495959.

It is an arithmetic number, because the mean of its divisors is an integer number (6862314195).

Almost surely, 2^27144264949 is an apocalyptic number.

It is an amenable number.

27144264949 is a deficient number, since it is larger than the sum of its proper divisors (304991831).

27144264949 is an equidigital number, since it uses as much as digits as its factorization.

27144264949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304991830.

The product of its digits is 3483648, while the sum is 52.

The spelling of 27144264949 in words is "twenty-seven billion, one hundred forty-four million, two hundred sixty-four thousand, nine hundred forty-nine".