20168366835 has 16 divisors (see below), whose sum is σ = 32286301344. Its totient is φ = 10750824192.

The previous prime is 20168366833. The next prime is 20168366839. The reversal of 20168366835 is 53866386102.

It is not a de Polignac number, because 20168366835 - 2¹ = 20168366833 is a prime.

It is a super-2 number, since 2×20168366835² (a number of 21 digits) contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322732 + ... + 380121.

It is an arithmetic number, because the mean of its divisors is an integer number (2017893834).

Almost surely, 2^20168366835 is an apocalyptic number.

20168366835 is a deficient number, since it is larger than the sum of its proper divisors (12117934509).

20168366835 is a wasteful number, since it uses less digits than its factorization.

20168366835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704774.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 20168366835 in words is "twenty billion, one hundred sixty-eight million, three hundred sixty-six thousand, eight hundred thirty-five".