20346331655473 has 2 divisors, whose sum is σ = 20346331655474. Its totient is φ = 20346331655472.

The previous prime is 20346331655453. The next prime is 20346331655567. The reversal of 20346331655473 is 37455613364302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15569558605584 + 4776773049889 = 3945828^2 + 2185583^2 .

It is a cyclic number.

It is not a de Polignac number, because 20346331655473 - 2¹⁷ = 20346331524401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20346331655473.

It is not a weakly prime, because it can be changed into another prime (20346331655453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173165827736 + 10173165827737.

It is an arithmetic number, because the mean of its divisors is an integer number (10173165827737).

Almost surely, 2^{20346331655473} is an apocalyptic number.

It is an amenable number.

20346331655473 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346331655473 is an equidigital number, since it uses as much as digits as its factorization.

20346331655473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 52.

The spelling of 20346331655473 in words is "twenty trillion, three hundred forty-six billion, three hundred thirty-one million, six hundred fifty-five thousand, four hundred seventy-three".