20343934955 has 4 divisors (see below), whose sum is σ = 24412721952. Its totient is φ = 16275147960.

The previous prime is 20343934939. The next prime is 20343934957. The reversal of 20343934955 is 55943934302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20343934955 - 2⁴ = 20343934939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20343934957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2034393491 + ... + 2034393500.

It is an arithmetic number, because the mean of its divisors is an integer number (6103180488).

Almost surely, 2^20343934955 is an apocalyptic number.

20343934955 is a deficient number, since it is larger than the sum of its proper divisors (4068786997).

20343934955 is an equidigital number, since it uses as much as digits as its factorization.

20343934955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068786996.

The product of its (nonzero) digits is 1749600, while the sum is 47.

The spelling of 20343934955 in words is "twenty billion, three hundred forty-three million, nine hundred thirty-four thousand, nine hundred fifty-five".