27830780078 has 16 divisors (see below), whose sum is σ = 42753316320. Its totient is φ = 13583556000.

The previous prime is 27830780077. The next prime is 27830780101. The reversal of 27830780078 is 87008703872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27830780071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955913 + ... + 984596.

It is an arithmetic number, because the mean of its divisors is an integer number (2672082270).

Almost surely, 2^27830780078 is an apocalyptic number.

27830780078 is a deficient number, since it is larger than the sum of its proper divisors (14922536242).

27830780078 is a wasteful number, since it uses less digits than its factorization.

27830780078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940683.

The product of its (nonzero) digits is 1053696, while the sum is 50.

The spelling of 27830780078 in words is "twenty-seven billion, eight hundred thirty million, seven hundred eighty thousand, seventy-eight".