20434013155 has 8 divisors (see below), whose sum is σ = 24521587200. Its totient is φ = 16346696256.

The previous prime is 20434013143. The next prime is 20434013221. The reversal of 20434013155 is 55131043402.

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

It is a cyclic number.

It is not a de Polignac number, because 20434013155 - 2²³ = 20425624547 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 252126 + ... + 323164.

It is an arithmetic number, because the mean of its divisors is an integer number (3065198400).

Almost surely, 2^20434013155 is an apocalyptic number.

20434013155 is a deficient number, since it is larger than the sum of its proper divisors (4087574045).

20434013155 is an equidigital number, since it uses as much as digits as its factorization.

20434013155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128573.

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 20434013155 its reverse (55131043402), we get a palindrome (75565056557).

The spelling of 20434013155 in words is "twenty billion, four hundred thirty-four million, thirteen thousand, one hundred fifty-five".