20513174158 has 8 divisors (see below), whose sum is σ = 31424437152. Its totient is φ = 10038361776.

The previous prime is 20513174141. The next prime is 20513174159. The reversal of 20513174158 is 85147131502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20513174159) 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 3 ways as a sum of consecutive naturals, for example, 109112535 + ... + 109112722.

It is an arithmetic number, because the mean of its divisors is an integer number (3928054644).

Almost surely, 2^20513174158 is an apocalyptic number.

20513174158 is a deficient number, since it is larger than the sum of its proper divisors (10911262994).

20513174158 is a wasteful number, since it uses less digits than its factorization.

20513174158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218225306.

The product of its (nonzero) digits is 33600, while the sum is 37.

The spelling of 20513174158 in words is "twenty billion, five hundred thirteen million, one hundred seventy-four thousand, one hundred fifty-eight".