20346317944805 has 8 divisors (see below), whose sum is σ = 24415796223000. Its totient is φ = 16276911229696.

The previous prime is 20346317944801. The next prime is 20346317944811. The reversal of 20346317944805 is 50844971364302.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5237992059556 + 15108325885249 = 2288666^2 + 3886943^2 .

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 20346317944805 - 2² = 20346317944801 is a prime.

It is a super-2 number, since 2×20346317944805² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346317944801) 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, 17263280 + ... + 18404169.

It is an arithmetic number, because the mean of its divisors is an integer number (3051974527875).

It is a 1-persistent number, because it is pandigital, but 2⋅20346317944805 = 40692635889610 is not.

Almost surely, 2^{20346317944805} is an apocalyptic number.

It is an amenable number.

20346317944805 is a deficient number, since it is larger than the sum of its proper divisors (4069478278195).

20346317944805 is a wasteful number, since it uses less digits than its factorization.

20346317944805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35781543.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 20346317944805 in words is "twenty trillion, three hundred forty-six billion, three hundred seventeen million, nine hundred forty-four thousand, eight hundred five".