168940168847 has 16 divisors (see below), whose sum is σ = 180116711424. Its totient is φ = 157905072000.

The previous prime is 168940168807. The next prime is 168940168871. The reversal of 168940168847 is 748861049861.

It is a cyclic number.

It is not a de Polignac number, because 168940168847 - 2²⁶ = 168873059983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168940168847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168940168807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1373822 + ... + 1491732.

It is an arithmetic number, because the mean of its divisors is an integer number (11257294464).

Almost surely, 2^168940168847 is an apocalyptic number.

168940168847 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

168940168847 is a deficient number, since it is larger than the sum of its proper divisors (11176542577).

168940168847 is a wasteful number, since it uses less digits than its factorization.

168940168847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118510.

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 168940168847 in words is "one hundred sixty-eight billion, nine hundred forty million, one hundred sixty-eight thousand, eight hundred forty-seven".