20340043004 has 12 divisors (see below), whose sum is σ = 36557104584. Its totient is φ = 9895155984.

The previous prime is 20340042973. The next prime is 20340043007. The reversal of 20340043004 is 40034004302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20340043007) 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, 68716214 + ... + 68716509.

It is an arithmetic number, because the mean of its divisors is an integer number (3046425382).

Almost surely, 2^20340043004 is an apocalyptic number.

It is an amenable number.

20340043004 is a deficient number, since it is larger than the sum of its proper divisors (16217061580).

20340043004 is a wasteful number, since it uses less digits than its factorization.

20340043004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137432764 (or 137432762 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20340043004 its reverse (40034004302), we get a palindrome (60374047306).

The spelling of 20340043004 in words is "twenty billion, three hundred forty million, forty-three thousand, four".