223101664551 has 16 divisors (see below), whose sum is σ = 331407114720. Its totient is φ = 148335684480.

The previous prime is 223101664547. The next prime is 223101664561. The reversal of 223101664551 is 155466101322.

223101664551 is a `hidden beast` number, since 2 + 2 + 3 + 1 + 0 + 1 + 6 + 645 + 5 + 1 = 666.

It is not a de Polignac number, because 223101664551 - 2² = 223101664547 is a prime.

It is a super-3 number, since 3×223101664551³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223101664561) 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 15 ways as a sum of consecutive naturals, for example, 11066370 + ... + 11086511.

It is an arithmetic number, because the mean of its divisors is an integer number (20712944670).

Almost surely, 2^223101664551 is an apocalyptic number.

223101664551 is a deficient number, since it is larger than the sum of its proper divisors (108305450169).

223101664551 is a wasteful number, since it uses less digits than its factorization.

223101664551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22153263 (or 22153257 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 223101664551 its reverse (155466101322), we get a palindrome (378567765873).

It can be divided in two parts, 22310 and 1664551, that added together give a palindrome (1686861).

The spelling of 223101664551 in words is "two hundred twenty-three billion, one hundred one million, six hundred sixty-four thousand, five hundred fifty-one".