7686787851 has 24 divisors (see below), whose sum is σ = 11408325344. Its totient is φ = 4983793920.

The previous prime is 7686787753. The next prime is 7686787853. The reversal of 7686787851 is 1587876867.

It is not a de Polignac number, because 7686787851 - 2¹⁷ = 7686656779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7686787853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1085715 + ... + 1092771.

Almost surely, 2^7686787851 is an apocalyptic number.

7686787851 is a deficient number, since it is larger than the sum of its proper divisors (3721537493).

7686787851 is a wasteful number, since it uses less digits than its factorization.

7686787851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10371 (or 10368 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 63.

The square root of 7686787851 is about 87674.3283464436. The cubic root of 7686787851 is about 1973.5507480281.

The spelling of 7686787851 in words is "seven billion, six hundred eighty-six million, seven hundred eighty-seven thousand, eight hundred fifty-one".