27775555007 has 4 divisors (see below), whose sum is σ = 27776918736. Its totient is φ = 27774191280.

The previous prime is 27775554997. The next prime is 27775555037. The reversal of 27775555007 is 70055557772.

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

It is a cyclic number.

It is not a de Polignac number, because 27775555007 - 2¹⁰ = 27775553983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27775555037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650843 + ... + 692204.

It is an arithmetic number, because the mean of its divisors is an integer number (6944229684).

Almost surely, 2^27775555007 is an apocalyptic number.

27775555007 is a deficient number, since it is larger than the sum of its proper divisors (1363729).

27775555007 is a wasteful number, since it uses less digits than its factorization.

27775555007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363728.

The product of its (nonzero) digits is 3001250, while the sum is 50.

The spelling of 27775555007 in words is "twenty-seven billion, seven hundred seventy-five million, five hundred fifty-five thousand, seven".