27750780071 has 16 divisors (see below), whose sum is σ = 32609501184. Its totient is φ = 23117107104.

The previous prime is 27750780061. The next prime is 27750780133. The reversal of 27750780071 is 17008705772.

It is not a de Polignac number, because 27750780071 - 2³⁰ = 26677038247 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 (27750780041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168026 + ... + 289368.

It is an arithmetic number, because the mean of its divisors is an integer number (2038093824).

Almost surely, 2^27750780071 is an apocalyptic number.

27750780071 is a deficient number, since it is larger than the sum of its proper divisors (4858721113).

27750780071 is a wasteful number, since it uses less digits than its factorization.

27750780071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122270.

The product of its (nonzero) digits is 192080, while the sum is 44.

The spelling of 27750780071 in words is "twenty-seven billion, seven hundred fifty million, seven hundred eighty thousand, seventy-one".