20434153255 has 32 divisors (see below), whose sum is σ = 26120828160. Its totient is φ = 15292723200.

The previous prime is 20434153253. The next prime is 20434153261. The reversal of 20434153255 is 55235143402.

It is not a de Polignac number, because 20434153255 - 2¹ = 20434153253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20434153255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434153253) 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 31 ways as a sum of consecutive naturals, for example, 13741122 + ... + 13742608.

It is an arithmetic number, because the mean of its divisors is an integer number (816275880).

Almost surely, 2^20434153255 is an apocalyptic number.

20434153255 is a deficient number, since it is larger than the sum of its proper divisors (5686674905).

20434153255 is a wasteful number, since it uses less digits than its factorization.

20434153255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 20434153255 its reverse (55235143402), we get a palindrome (75669296657).

The spelling of 20434153255 in words is "twenty billion, four hundred thirty-four million, one hundred fifty-three thousand, two hundred fifty-five".