20346331655567 has 2 divisors, whose sum is σ = 20346331655568. Its totient is φ = 20346331655566.

The previous prime is 20346331655473. The next prime is 20346331655591. The reversal of 20346331655567 is 76555613364302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20346331655567 - 2¹⁰ = 20346331654543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20346331655267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10173165827783 + 10173165827784.

It is an arithmetic number, because the mean of its divisors is an integer number (10173165827784).

Almost surely, 2^{20346331655567} is an apocalyptic number.

20346331655567 is a deficient number, since it is larger than the sum of its proper divisors (1).

20346331655567 is an equidigital number, since it uses as much as digits as its factorization.

20346331655567 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824000, while the sum is 56.

The spelling of 20346331655567 in words is "twenty trillion, three hundred forty-six billion, three hundred thirty-one million, six hundred fifty-five thousand, five hundred sixty-seven".