23440334004 has 18 divisors (see below), whose sum is σ = 59251955490. Its totient is φ = 7813444656.

The previous prime is 23440334003. The next prime is 23440334059. The reversal of 23440334004 is 40043304432.

It can be written as a sum of positive squares in only one way, i.e., 15590019600 + 7850314404 = 124860^2 + 88602^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23440334003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 325560159 + ... + 325560230.

It is an arithmetic number, because the mean of its divisors is an integer number (3291775305).

Almost surely, 2^23440334004 is an apocalyptic number.

It is an amenable number.

23440334004 is an abundant number, since it is smaller than the sum of its proper divisors (35811621486).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23440334004 is a wasteful number, since it uses less digits than its factorization.

23440334004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651120399 (or 651120394 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 27.

Adding to 23440334004 its reverse (40043304432), we get a palindrome (63483638436).

The spelling of 23440334004 in words is "twenty-three billion, four hundred forty million, three hundred thirty-four thousand, four".