651054122223 has 4 divisors (see below), whose sum is σ = 868072162968. Its totient is φ = 434036081480.

The previous prime is 651054122221. The next prime is 651054122239. The reversal of 651054122223 is 322221450156.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 651054122223 - 2¹ = 651054122221 is a prime.

It is a super-2 number, since 2×651054122223² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651054122221) 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 3 ways as a sum of consecutive naturals, for example, 108509020368 + ... + 108509020373.

It is an arithmetic number, because the mean of its divisors is an integer number (217018040742).

Almost surely, 2^651054122223 is an apocalyptic number.

651054122223 is a deficient number, since it is larger than the sum of its proper divisors (217018040745).

651054122223 is a wasteful number, since it uses less digits than its factorization.

651054122223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217018040744.

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 651054122223 its reverse (322221450156), we get a palindrome (973275572379).

The spelling of 651054122223 in words is "six hundred fifty-one billion, fifty-four million, one hundred twenty-two thousand, two hundred twenty-three".