20355266446105 has 32 divisors (see below), whose sum is σ = 25094923956000. Its totient is φ = 15845299126272.

The previous prime is 20355266446063. The next prime is 20355266446157. The reversal of 20355266446105 is 50164466255302.

It can be written as a sum of positive squares in 16 ways, for example, as 2717080799449 + 17638185646656 = 1648357^2 + 4199784^2 .

It is a cyclic number.

It is not a de Polignac number, because 20355266446105 - 2¹⁵ = 20355266413337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13887987 + ... + 15283543.

It is an arithmetic number, because the mean of its divisors is an integer number (784216373625).

Almost surely, 2^{20355266446105} is an apocalyptic number.

It is an amenable number.

20355266446105 is a deficient number, since it is larger than the sum of its proper divisors (4739657509895).

20355266446105 is a wasteful number, since it uses less digits than its factorization.

20355266446105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396173.

The product of its (nonzero) digits is 5184000, while the sum is 49.

The spelling of 20355266446105 in words is "twenty trillion, three hundred fifty-five billion, two hundred sixty-six million, four hundred forty-six thousand, one hundred five".