168353701694 has 4 divisors (see below), whose sum is σ = 252530552544. Its totient is φ = 84176850846.

The previous prime is 168353701693. The next prime is 168353701709. The reversal of 168353701694 is 496107353861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 496107353861 = 7 ⋅70872479123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168353701693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42088425422 + ... + 42088425425.

It is an arithmetic number, because the mean of its divisors is an integer number (63132638136).

Almost surely, 2^168353701694 is an apocalyptic number.

168353701694 is a deficient number, since it is larger than the sum of its proper divisors (84176850850).

168353701694 is an equidigital number, since it uses as much as digits as its factorization.

168353701694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84176850849.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 168353701694 in words is "one hundred sixty-eight billion, three hundred fifty-three million, seven hundred one thousand, six hundred ninety-four".