223135520056645 has 96 divisors (see below), whose sum is σ = 315217980000000. Its totient is φ = 151178882899968.

The previous prime is 223135520056643. The next prime is 223135520056663. The reversal of 223135520056645 is 546650025531322.

It is a happy number.

It is not a de Polignac number, because 223135520056645 - 2¹ = 223135520056643 is a prime.

It is a super-3 number, since 3×223135520056645³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223135520056643) 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 95 ways as a sum of consecutive naturals, for example, 18642781221 + ... + 18642793189.

It is an arithmetic number, because the mean of its divisors is an integer number (3283520625000).

Almost surely, 2^{223135520056645} is an apocalyptic number.

It is an amenable number.

223135520056645 is a deficient number, since it is larger than the sum of its proper divisors (92082459943355).

223135520056645 is a wasteful number, since it uses less digits than its factorization.

223135520056645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13995 (or 13988 counting only the distinct ones).

The product of its (nonzero) digits is 6480000, while the sum is 49.

Adding to 223135520056645 its reverse (546650025531322), we get a palindrome (769785545587967).

The spelling of 223135520056645 in words is "two hundred twenty-three trillion, one hundred thirty-five billion, five hundred twenty million, fifty-six thousand, six hundred forty-five".