20004150155 has 24 divisors (see below), whose sum is σ = 27937750176. Its totient is φ = 13692673280.

The previous prime is 20004150139. The next prime is 20004150161. The reversal of 20004150155 is 55105140002.

It is a happy number.

It is not a de Polignac number, because 20004150155 - 2⁴ = 20004150139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20004150155.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 962207 + ... + 982776.

It is an arithmetic number, because the mean of its divisors is an integer number (1164072924).

Almost surely, 2^20004150155 is an apocalyptic number.

20004150155 is a deficient number, since it is larger than the sum of its proper divisors (7933600021).

20004150155 is a wasteful number, since it uses less digits than its factorization.

20004150155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945027 (or 1945016 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 23.

Adding to 20004150155 its reverse (55105140002), we get a palindrome (75109290157).

The spelling of 20004150155 in words is "twenty billion, four million, one hundred fifty thousand, one hundred fifty-five".