20243013155 has 16 divisors (see below), whose sum is σ = 25587360000. Its totient is φ = 15331730400.

The previous prime is 20243013151. The next prime is 20243013157. The reversal of 20243013155 is 55131034202.

It is a happy number.

It is not a de Polignac number, because 20243013155 - 2² = 20243013151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20243013151) 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 15 ways as a sum of consecutive naturals, for example, 71330 + ... + 213480.

It is an arithmetic number, because the mean of its divisors is an integer number (1599210000).

Almost surely, 2^20243013155 is an apocalyptic number.

20243013155 is a deficient number, since it is larger than the sum of its proper divisors (5344346845).

20243013155 is a wasteful number, since it uses less digits than its factorization.

20243013155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143674.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20243013155 its reverse (55131034202), we get a palindrome (75374047357).

The spelling of 20243013155 in words is "twenty billion, two hundred forty-three million, thirteen thousand, one hundred fifty-five".