20134434355 has 16 divisors (see below), whose sum is σ = 27857306304. Its totient is φ = 13684285440.

The previous prime is 20134434323. The next prime is 20134434371. The reversal of 20134434355 is 55343443102.

It is a happy number.

It is not a de Polignac number, because 20134434355 - 2⁵ = 20134434323 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 20134434355.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2541486 + ... + 2549395.

It is an arithmetic number, because the mean of its divisors is an integer number (1741081644).

Almost surely, 2^20134434355 is an apocalyptic number.

20134434355 is a deficient number, since it is larger than the sum of its proper divisors (7722871949).

20134434355 is a wasteful number, since it uses less digits than its factorization.

20134434355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5091006.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 20134434355 its reverse (55343443102), we get a palindrome (75477877457).

The spelling of 20134434355 in words is "twenty billion, one hundred thirty-four million, four hundred thirty-four thousand, three hundred fifty-five".