20344136464641 has 8 divisors (see below), whose sum is σ = 29591471221344. Its totient is φ = 12329779675520.

The previous prime is 20344136464573. The next prime is 20344136464661. The reversal of 20344136464641 is 14646463144302.

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

It is a cyclic number.

It is not a de Polignac number, because 20344136464641 - 2⁹ = 20344136464129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20344136464661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308244491856 + ... + 308244491921.

It is an arithmetic number, because the mean of its divisors is an integer number (3698933902668).

Almost surely, 2^{20344136464641} is an apocalyptic number.

It is an amenable number.

20344136464641 is a deficient number, since it is larger than the sum of its proper divisors (9247334756703).

20344136464641 is a wasteful number, since it uses less digits than its factorization.

20344136464641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616488983791.

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 20344136464641 in words is "twenty trillion, three hundred forty-four billion, one hundred thirty-six million, four hundred sixty-four thousand, six hundred forty-one".