12946078973 has 6 divisors (see below), whose sum is σ = 13191188634. Its totient is φ = 12701000624.

The previous prime is 12946078967. The next prime is 12946078997. The reversal of 12946078973 is 37987064921.

It can be written as a sum of positive squares in 3 ways, for example, as 11739072409 + 1207006564 = 108347^2 + 34742^2 .

It is not a de Polignac number, because 12946078973 - 2⁶ = 12946078909 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 (12946078933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 820523 + ... + 836151.

It is an arithmetic number, because the mean of its divisors is an integer number (2198531439).

Almost surely, 2^12946078973 is an apocalyptic number.

It is an amenable number.

12946078973 is a deficient number, since it is larger than the sum of its proper divisors (245109661).

12946078973 is an frugal number, since it uses more digits than its factorization.

12946078973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31311 (or 15682 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 12946078973 in words is "twelve billion, nine hundred forty-six million, seventy-eight thousand, nine hundred seventy-three".