27853637641 has 12 divisors (see below), whose sum is σ = 29703675708. Its totient is φ = 26113114112.

The previous prime is 27853637639. The next prime is 27853637653. The reversal of 27853637641 is 14673635872.

It can be written as a sum of positive squares in 6 ways, for example, as 15796719225 + 12056918416 = 125685^2 + 109804^2 .

It is not a de Polignac number, because 27853637641 - 2¹ = 27853637639 is a prime.

It is a super-2 number, since 2×27853637641² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27853637621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113236 + ... + 261781.

It is an arithmetic number, because the mean of its divisors is an integer number (2475306309).

Almost surely, 2^27853637641 is an apocalyptic number.

It is an amenable number.

27853637641 is a deficient number, since it is larger than the sum of its proper divisors (1850038067).

27853637641 is a wasteful number, since it uses less digits than its factorization.

27853637641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375308 (or 375291 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 52.

The spelling of 27853637641 in words is "twenty-seven billion, eight hundred fifty-three million, six hundred thirty-seven thousand, six hundred forty-one".