20188328514 has 32 divisors (see below), whose sum is σ = 42559903680. Its totient is φ = 6366537792.

The previous prime is 20188328497. The next prime is 20188328521. The reversal of 20188328514 is 41582388102.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37237 + ... + 204360.

It is an arithmetic number, because the mean of its divisors is an integer number (1329996990).

Almost surely, 2^20188328514 is an apocalyptic number.

20188328514 is an abundant number, since it is smaller than the sum of its proper divisors (22371575166).

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

20188328514 is a wasteful number, since it uses less digits than its factorization.

20188328514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242354.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 20188328514 in words is "twenty billion, one hundred eighty-eight million, three hundred twenty-eight thousand, five hundred fourteen".