27768725706 has 32 divisors (see below), whose sum is σ = 56183872320. Its totient is φ = 9148588416.

The previous prime is 27768725693. The next prime is 27768725741. The reversal of 27768725706 is 60752786772.

It is a happy number.

It is a super-2 number, since 2×27768725706² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1548765 + ... + 1566591.

It is an arithmetic number, because the mean of its divisors is an integer number (1755746010).

Almost surely, 2^27768725706 is an apocalyptic number.

27768725706 is an abundant number, since it is smaller than the sum of its proper divisors (28415146614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27768725706 is a wasteful number, since it uses less digits than its factorization.

27768725706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20838.

The product of its (nonzero) digits is 13829760, while the sum is 57.

The spelling of 27768725706 in words is "twenty-seven billion, seven hundred sixty-eight million, seven hundred twenty-five thousand, seven hundred six".