20234434355 has 16 divisors (see below), whose sum is σ = 24689901600. Its totient is φ = 15917172480.

The previous prime is 20234434333. The next prime is 20234434369. The reversal of 20234434355 is 55343443202.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-20234434355 is a prime.

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, 45065 + ... + 206154.

It is an arithmetic number, because the mean of its divisors is an integer number (1543118850).

Almost surely, 2^20234434355 is an apocalyptic number.

20234434355 is a deficient number, since it is larger than the sum of its proper divisors (4455467245).

20234434355 is a wasteful number, since it uses less digits than its factorization.

20234434355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251494.

The product of its (nonzero) digits is 172800, while the sum is 35.

Adding to 20234434355 its reverse (55343443202), we get a palindrome (75577877557).

The spelling of 20234434355 in words is "twenty billion, two hundred thirty-four million, four hundred thirty-four thousand, three hundred fifty-five".