12901405078 has 4 divisors (see below), whose sum is σ = 19352107620. Its totient is φ = 6450702538.

The previous prime is 12901405063. The next prime is 12901405079. The reversal of 12901405078 is 87050410921.

12901405078 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87050410921 = 72559 ⋅1199719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12901405079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3225351268 + ... + 3225351271.

It is an arithmetic number, because the mean of its divisors is an integer number (4838026905).

Almost surely, 2^12901405078 is an apocalyptic number.

12901405078 is a deficient number, since it is larger than the sum of its proper divisors (6450702542).

12901405078 is an equidigital number, since it uses as much as digits as its factorization.

12901405078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450702541.

The product of its (nonzero) digits is 20160, while the sum is 37.

Adding to 12901405078 its reverse (87050410921), we get a palindrome (99951815999).

The spelling of 12901405078 in words is "twelve billion, nine hundred one million, four hundred five thousand, seventy-eight".