7867490947686 has 64 divisors (see below), whose sum is σ = 19012060877760. Its totient is φ = 2401523458560.

The previous prime is 7867490947663. The next prime is 7867490947769. The reversal of 7867490947686 is 6867490947687.

7867490947686 is a `hidden beast` number, since 7 + 8 + 6 + 7 + 490 + 9 + 47 + 6 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115780245 + ... + 115848176.

It is an arithmetic number, because the mean of its divisors is an integer number (297063451215).

Almost surely, 2^{7867490947686} is an apocalyptic number.

7867490947686 is an abundant number, since it is smaller than the sum of its proper divisors (11144569930074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7867490947686 is a wasteful number, since it uses less digits than its factorization.

7867490947686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231628486 (or 231628480 counting only the distinct ones).

The product of its (nonzero) digits is 6145155072, while the sum is 81.

Subtracting from 7867490947686 its reverse (6867490947687), we obtain a palindrome (999999999999).

The spelling of 7867490947686 in words is "seven trillion, eight hundred sixty-seven billion, four hundred ninety million, nine hundred forty-seven thousand, six hundred eighty-six".