651010446623 has 4 divisors (see below), whose sum is σ = 685274154360. Its totient is φ = 616746738888.

The previous prime is 651010446617. The next prime is 651010446683. The reversal of 651010446623 is 326644010156.

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 651010446623 - 2⁴ = 651010446607 is a prime.

It is a super-2 number, since 2×651010446623² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651010446683) 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, 17131853840 + ... + 17131853877.

It is an arithmetic number, because the mean of its divisors is an integer number (171318538590).

Almost surely, 2^651010446623 is an apocalyptic number.

651010446623 is a deficient number, since it is larger than the sum of its proper divisors (34263707737).

651010446623 is a wasteful number, since it uses less digits than its factorization.

651010446623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34263707736.

The product of its (nonzero) digits is 103680, while the sum is 38.

Adding to 651010446623 its reverse (326644010156), we get a palindrome (977654456779).

The spelling of 651010446623 in words is "six hundred fifty-one billion, ten million, four hundred forty-six thousand, six hundred twenty-three".