20135002178 has 8 divisors (see below), whose sum is σ = 30244049472. Its totient is φ = 10053652356.

The previous prime is 20135002127. The next prime is 20135002187. The reversal of 20135002178 is 87120053102.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20135002178.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6922550 + ... + 6925457.

It is an arithmetic number, because the mean of its divisors is an integer number (3780506184).

Almost surely, 2^20135002178 is an apocalyptic number.

20135002178 is a deficient number, since it is larger than the sum of its proper divisors (10109047294).

20135002178 is a wasteful number, since it uses less digits than its factorization.

20135002178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13848736.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 20135002178 in words is "twenty billion, one hundred thirty-five million, two thousand, one hundred seventy-eight".