2912643904321 has 4 divisors (see below), whose sum is σ = 2930084885952. Its totient is φ = 2895202922692.

The previous prime is 2912643904301. The next prime is 2912643904363. The reversal of 2912643904321 is 1234093462192.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2912643904321 - 2¹⁹ = 2912643380033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2912643904301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8720490565 + ... + 8720490898.

It is an arithmetic number, because the mean of its divisors is an integer number (732521221488).

Almost surely, 2^{2912643904321} is an apocalyptic number.

It is an amenable number.

2912643904321 is a deficient number, since it is larger than the sum of its proper divisors (17440981631).

2912643904321 is a wasteful number, since it uses less digits than its factorization.

2912643904321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17440981630.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 2912643904321 in words is "two trillion, nine hundred twelve billion, six hundred forty-three million, nine hundred four thousand, three hundred twenty-one".