868091643936 has 192 divisors, whose sum is σ = 2851211059200. Its totient is φ = 254572243200.

The previous prime is 868091643917. The next prime is 868091643949. The reversal of 868091643936 is 639346190868.

868091643936 is a `hidden beast` number, since 8 + 6 + 80 + 9 + 164 + 393 + 6 = 666.

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, 1178596 + ... + 1767843.

It is an arithmetic number, because the mean of its divisors is an integer number (14850057600).

Almost surely, 2^868091643936 is an apocalyptic number.

It is an amenable number.

868091643936 is an abundant number, since it is smaller than the sum of its proper divisors (1983119415264).

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

868091643936 is a wasteful number, since it uses less digits than its factorization.

868091643936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946500 (or 2946486 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 63.

The spelling of 868091643936 in words is "eight hundred sixty-eight billion, ninety-one million, six hundred forty-three thousand, nine hundred thirty-six".