27507750641 has 4 divisors (see below), whose sum is σ = 31437429312. Its totient is φ = 23578071972.

The previous prime is 27507750629. The next prime is 27507750659. The reversal of 27507750641 is 14605770572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27507750641 - 2⁶ = 27507750577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27507750592 and 27507750601.

It is not an unprimeable number, because it can be changed into a prime (27507750661) 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, 1964839325 + ... + 1964839338.

It is an arithmetic number, because the mean of its divisors is an integer number (7859357328).

Almost surely, 2^27507750641 is an apocalyptic number.

It is an amenable number.

27507750641 is a deficient number, since it is larger than the sum of its proper divisors (3929678671).

27507750641 is an equidigital number, since it uses as much as digits as its factorization.

27507750641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929678670.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 27507750641 in words is "twenty-seven billion, five hundred seven million, seven hundred fifty thousand, six hundred forty-one".