168836780473 has 16 divisors (see below), whose sum is σ = 176413176000. Its totient is φ = 161421325632.

The previous prime is 168836780471. The next prime is 168836780477. The reversal of 168836780473 is 374087638861.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 168836780473 - 2¹ = 168836780471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168836780471) 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, 5614963 + ... + 5644951.

It is an arithmetic number, because the mean of its divisors is an integer number (11025823500).

Almost surely, 2^168836780473 is an apocalyptic number.

It is an amenable number.

168836780473 is a deficient number, since it is larger than the sum of its proper divisors (7576395527).

168836780473 is a wasteful number, since it uses less digits than its factorization.

168836780473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32664.

The product of its (nonzero) digits is 32514048, while the sum is 61.

The spelling of 168836780473 in words is "one hundred sixty-eight billion, eight hundred thirty-six million, seven hundred eighty thousand, four hundred seventy-three".