12177495078 has 16 divisors (see below), whose sum is σ = 27834274560. Its totient is φ = 3479284296.

The previous prime is 12177495047. The next prime is 12177495079. The reversal of 12177495078 is 87059477121.

It is a self number, because there is not a number n which added to its sum of digits gives 12177495078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12177495079) 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, 144970138 + ... + 144970221.

It is an arithmetic number, because the mean of its divisors is an integer number (1739642160).

Almost surely, 2^12177495078 is an apocalyptic number.

12177495078 is an abundant number, since it is smaller than the sum of its proper divisors (15656779482).

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

12177495078 is a wasteful number, since it uses less digits than its factorization.

12177495078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289940371.

The product of its (nonzero) digits is 987840, while the sum is 51.

The spelling of 12177495078 in words is "twelve billion, one hundred seventy-seven million, four hundred ninety-five thousand, seventy-eight".