12940642945 has 8 divisors (see below), whose sum is σ = 16029699840. Its totient is φ = 10018562160.

The previous prime is 12940642931. The next prime is 12940642969. The reversal of 12940642945 is 54924604921.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12940642945 - 2¹⁹ = 12940118657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12940642895 and 12940642904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41743855 + ... + 41744164.

It is an arithmetic number, because the mean of its divisors is an integer number (2003712480).

Almost surely, 2^12940642945 is an apocalyptic number.

It is an amenable number.

12940642945 is a deficient number, since it is larger than the sum of its proper divisors (3089056895).

12940642945 is an equidigital number, since it uses as much as digits as its factorization.

12940642945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83488055.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 12940642945 in words is "twelve billion, nine hundred forty million, six hundred forty-two thousand, nine hundred forty-five".