20346512663401 has 4 divisors (see below), whose sum is σ = 20453038907904. Its totient is φ = 20239986418900.

The previous prime is 20346512663333. The next prime is 20346512663413. The reversal of 20346512663401 is 10436621564302.

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 20346512663401 - 2⁷ = 20346512663273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20346512663461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53263121965 + ... + 53263122346.

It is an arithmetic number, because the mean of its divisors is an integer number (5113259726976).

Almost surely, 2^{20346512663401} is an apocalyptic number.

It is an amenable number.

20346512663401 is a deficient number, since it is larger than the sum of its proper divisors (106526244503).

20346512663401 is a wasteful number, since it uses less digits than its factorization.

20346512663401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106526244502.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 20346512663401 in words is "twenty trillion, three hundred forty-six billion, five hundred twelve million, six hundred sixty-three thousand, four hundred one".