8786961787487 has 4 divisors (see below), whose sum is σ = 9462881925000. Its totient is φ = 8111041649976.

The previous prime is 8786961787477. The next prime is 8786961787501. The reversal of 8786961787487 is 7847871696878.

It is a happy number.

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 8786961787487 - 2²⁶ = 8786894678623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8786961787399 and 8786961787408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8786961787427) 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, 337960068737 + ... + 337960068762.

It is an arithmetic number, because the mean of its divisors is an integer number (2365720481250).

Almost surely, 2^{8786961787487} is an apocalyptic number.

8786961787487 is a deficient number, since it is larger than the sum of its proper divisors (675920137513).

8786961787487 is a wasteful number, since it uses less digits than its factorization.

8786961787487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675920137512.

The product of its digits is 12745506816, while the sum is 86.

The spelling of 8786961787487 in words is "eight trillion, seven hundred eighty-six billion, nine hundred sixty-one million, seven hundred eighty-seven thousand, four hundred eighty-seven".