20350465204455 has 24 divisors (see below), whose sum is σ = 35274654484992. Its totient is φ = 10853423043264.

The previous prime is 20350465204403. The next prime is 20350465204457. The reversal of 20350465204455 is 55440256405302.

20350465204455 is a `hidden beast` number, since 2 + 0 + 3 + 504 + 6 + 52 + 0 + 44 + 55 = 666.

It is not a de Polignac number, because 20350465204455 - 2¹³ = 20350465196263 is a prime.

It is a super-3 number, since 3×20350465204455³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20350465204455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350465204457) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 149244 + ... + 6381473.

It is an arithmetic number, because the mean of its divisors is an integer number (1469777270208).

Almost surely, 2^{20350465204455} is an apocalyptic number.

20350465204455 is a deficient number, since it is larger than the sum of its proper divisors (14924189280537).

20350465204455 is a wasteful number, since it uses less digits than its factorization.

20350465204455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6599975 (or 6599972 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 45.

The spelling of 20350465204455 in words is "twenty trillion, three hundred fifty billion, four hundred sixty-five million, two hundred four thousand, four hundred fifty-five".