20122738043 has 4 divisors (see below), whose sum is σ = 20133552768. Its totient is φ = 20111923320.

The previous prime is 20122738039. The next prime is 20122738121. The reversal of 20122738043 is 34083722102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122738043 - 2² = 20122738039 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122738003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5404571 + ... + 5408292.

It is an arithmetic number, because the mean of its divisors is an integer number (5033388192).

Almost surely, 2^20122738043 is an apocalyptic number.

20122738043 is a deficient number, since it is larger than the sum of its proper divisors (10814725).

20122738043 is a wasteful number, since it uses less digits than its factorization.

20122738043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10814724.

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 20122738043 in words is "twenty billion, one hundred twenty-two million, seven hundred thirty-eight thousand, forty-three".