20446623450365 has 32 divisors (see below), whose sum is σ = 29732382270720. Its totient is φ = 13185665063424.

The previous prime is 20446623450347. The next prime is 20446623450391. The reversal of 20446623450365 is 56305432664402.

It is not a de Polignac number, because 20446623450365 - 2¹⁶ = 20446623384829 is a prime.

It is a super-3 number, since 3×20446623450365³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112123502 + ... + 112305711.

It is an arithmetic number, because the mean of its divisors is an integer number (929136945960).

Almost surely, 2^{20446623450365} is an apocalyptic number.

It is an amenable number.

20446623450365 is a deficient number, since it is larger than the sum of its proper divisors (9285758820355).

20446623450365 is a wasteful number, since it uses less digits than its factorization.

20446623450365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224429381.

The product of its (nonzero) digits is 12441600, while the sum is 50.

The spelling of 20446623450365 in words is "twenty trillion, four hundred forty-six billion, six hundred twenty-three million, four hundred fifty thousand, three hundred sixty-five".