27970257078 has 48 divisors (see below), whose sum is σ = 62498738016. Its totient is φ = 9033742080.

The previous prime is 27970257071. The next prime is 27970257079. The reversal of 27970257078 is 87075207972.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27970257071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73375 + ... + 247637.

It is an arithmetic number, because the mean of its divisors is an integer number (1302057042).

Almost surely, 2^27970257078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27970257078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31249369008).

27970257078 is an abundant number, since it is smaller than the sum of its proper divisors (34528480938).

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

27970257078 is a wasteful number, since it uses less digits than its factorization.

27970257078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174549 (or 174546 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 54.

The spelling of 27970257078 in words is "twenty-seven billion, nine hundred seventy million, two hundred fifty-seven thousand, seventy-eight".