20168366834 has 64 divisors (see below), whose sum is σ = 38433208320. Its totient is φ = 7709230080.

The previous prime is 20168366833. The next prime is 20168366839. The reversal of 20168366834 is 43866386102.

It is not an unprimeable number, because it can be changed into a prime (20168366833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5240699 + ... + 5244545.

It is an arithmetic number, because the mean of its divisors is an integer number (600518880).

Almost surely, 2^20168366834 is an apocalyptic number.

20168366834 is a deficient number, since it is larger than the sum of its proper divisors (18264841486).

20168366834 is a wasteful number, since it uses less digits than its factorization.

20168366834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4503.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 20168366834 in words is "twenty billion, one hundred sixty-eight million, three hundred sixty-six thousand, eight hundred thirty-four".