7868740478687 has 12 divisors (see below), whose sum is σ = 8652796924968. Its totient is φ = 7150352286000.

The previous prime is 7868740478567. The next prime is 7868740478693.

It is a happy number.

7868740478687 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7868740478687 - 2¹⁶ = 7868740413151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7868740478087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13570064 + ... + 14138037.

It is an arithmetic number, because the mean of its divisors is an integer number (721066410414).

Almost surely, 2^{7868740478687} is an apocalyptic number.

7868740478687 is a deficient number, since it is larger than the sum of its proper divisors (784056446281).

7868740478687 is a wasteful number, since it uses less digits than its factorization.

7868740478687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27710470 (or 27710459 counting only the distinct ones).

The product of its (nonzero) digits is 5664669696, while the sum is 80.

The spelling of 7868740478687 in words is "seven trillion, eight hundred sixty-eight billion, seven hundred forty million, four hundred seventy-eight thousand, six hundred eighty-seven".