396868131868694 has 4 divisors (see below), whose sum is σ = 595302197803044. Its totient is φ = 198434065934346.

The previous prime is 396868131868693. The next prime is 396868131868799. The reversal of 396868131868694 is 496868131868693.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396868131868693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99217032967172 + ... + 99217032967175.

It is an arithmetic number, because the mean of its divisors is an integer number (148825549450761).

Almost surely, 2^{396868131868694} is an apocalyptic number.

396868131868694 is a deficient number, since it is larger than the sum of its proper divisors (198434065934350).

396868131868694 is a wasteful number, since it uses less digits than its factorization.

396868131868694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198434065934349.

The product of its digits is 15479341056, while the sum is 86.

Subtracting 396868131868694 from its reverse (496868131868693), we obtain a palindrome (99999999999999).

The spelling of 396868131868694 in words is "three hundred ninety-six trillion, eight hundred sixty-eight billion, one hundred thirty-one million, eight hundred sixty-eight thousand, six hundred ninety-four".