12926078901 has 10 divisors (see below), whose sum is σ = 19309327862. Its totient is φ = 8617385880.

The previous prime is 12926078881. The next prime is 12926078903. The reversal of 12926078901 is 10987062921.

12926078901 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11449214001 + 1476864900 = 107001^2 + 38430^2 .

It is not a de Polignac number, because 12926078901 - 2¹⁰ = 12926077877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12926078903) 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 in 9 ways as a sum of consecutive naturals, for example, 79790530 + ... + 79790691.

Almost surely, 2^12926078901 is an apocalyptic number.

It is an amenable number.

12926078901 is a deficient number, since it is larger than the sum of its proper divisors (6383248961).

12926078901 is an equidigital number, since it uses as much as digits as its factorization.

12926078901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159581233 (or 159581224 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 12926078901 in words is "twelve billion, nine hundred twenty-six million, seventy-eight thousand, nine hundred one".