8751463681 has 4 divisors (see below), whose sum is σ = 8751654100. Its totient is φ = 8751273264.

The previous prime is 8751463619. The next prime is 8751463691. The reversal of 8751463681 is 1863641578.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1863641578 = 2 ⋅931820789.

It can be written as a sum of positive squares in 2 ways, for example, as 5861433600 + 2890030081 = 76560^2 + 53759^2 .

It is a cyclic number.

It is not a de Polignac number, because 8751463681 - 2²³ = 8743075073 is a prime.

It is a super-2 number, since 2×8751463681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8751463691) 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, 21055 + ... + 133963.

It is an arithmetic number, because the mean of its divisors is an integer number (2187913525).

Almost surely, 2^8751463681 is an apocalyptic number.

It is an amenable number.

8751463681 is a deficient number, since it is larger than the sum of its proper divisors (190419).

8751463681 is a wasteful number, since it uses less digits than its factorization.

8751463681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190418.

The product of its digits is 967680, while the sum is 49.

The square root of 8751463681 is about 93549.2580462293. The cubic root of 8751463681 is about 2060.7575434408.

The spelling of 8751463681 in words is "eight billion, seven hundred fifty-one million, four hundred sixty-three thousand, six hundred eighty-one".