20677348158 has 16 divisors (see below), whose sum is σ = 43531259520. Its totient is φ = 6529688856.

The previous prime is 20677348157. The next prime is 20677348187. The reversal of 20677348158 is 85184377602.

It is a self number, because there is not a number n which added to its sum of digits gives 20677348158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20677348157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90690010 + ... + 90690237.

It is an arithmetic number, because the mean of its divisors is an integer number (2720703720).

Almost surely, 2^20677348158 is an apocalyptic number.

20677348158 is an abundant number, since it is smaller than the sum of its proper divisors (22853911362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20677348158 is a wasteful number, since it uses less digits than its factorization.

20677348158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181380271.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 20677348158 in words is "twenty billion, six hundred seventy-seven million, three hundred forty-eight thousand, one hundred fifty-eight".