716851649251 has 8 divisors (see below), whose sum is σ = 719555922944. Its totient is φ = 714148581960.

The previous prime is 716851649233. The next prime is 716851649303. The reversal of 716851649251 is 152946158617.

716851649251 is a nontrivial binomial coefficient, being equal to C(1197374, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 3-Lehmer number, since φ(716851649251) divides (716851649251-1)³.

It is a cyclic number.

It is a Carmichael number.

It is not a de Polignac number, because 716851649251 - 2⁹ = 716851648739 is a prime.

It is a super-2 number, since 2×716851649251² (a number of 25 digits) contains 22 as substring.

It is a deceptive number, since it divides R_716851649250.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 716851649192 and 716851649201.

It is not an unprimeable number, because it can be changed into a prime (716851649201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898030 + ... + 1496716.

It is an arithmetic number, because the mean of its divisors is an integer number (89944490368).

It is a Poulet number, since it divides 2^716851649250-1.

Almost surely, 2^716851649251 is an apocalyptic number.

716851649251 is the 1197373-rd triangular number and also the 598687-th hexagonal number.

716851649251 is the 399125-th centered nonagonal number.

716851649251 is a deficient number, since it is larger than the sum of its proper divisors (2704273693).

716851649251 is a wasteful number, since it uses less digits than its factorization.

716851649251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603201.

The product of its digits is 3628800, while the sum is 55.

The spelling of 716851649251 in words is "seven hundred sixteen billion, eight hundred fifty-one million, six hundred forty-nine thousand, two hundred fifty-one".