651716126651 has 4 divisors (see below), whose sum is σ = 651886602912. Its totient is φ = 651545650392.

The previous prime is 651716126639. The next prime is 651716126671. The reversal of 651716126651 is 156621617156.

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 651716126651 - 2⁶ = 651716126587 is a prime.

It is a super-3 number, since 3×651716126651³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 651716126596 and 651716126605.

It is not an unprimeable number, because it can be changed into a prime (651716126671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85232396 + ... + 85240041.

It is an arithmetic number, because the mean of its divisors is an integer number (162971650728).

Almost surely, 2^651716126651 is an apocalyptic number.

651716126651 is a deficient number, since it is larger than the sum of its proper divisors (170476261).

651716126651 is a wasteful number, since it uses less digits than its factorization.

651716126651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170476260.

The product of its digits is 453600, while the sum is 47.

The spelling of 651716126651 in words is "six hundred fifty-one billion, seven hundred sixteen million, one hundred twenty-six thousand, six hundred fifty-one".