1234640554044 has 24 divisors (see below), whose sum is σ = 2893518837888. Its totient is φ = 409733868720.

The previous prime is 1234640554027. The next prime is 1234640554079. The reversal of 1234640554044 is 4404550464321.

It is a junction number, because it is equal to n+sod(n) for n = 1234640553987 and 1234640554005.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 226619992 + ... + 226625439.

It is an arithmetic number, because the mean of its divisors is an integer number (120563284912).

Almost surely, 2^{1234640554044} is an apocalyptic number.

It is an amenable number.

1234640554044 is an abundant number, since it is smaller than the sum of its proper divisors (1658878283844).

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

1234640554044 is a wasteful number, since it uses less digits than its factorization.

1234640554044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453245665 (or 453245663 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 42.

The spelling of 1234640554044 in words is "one trillion, two hundred thirty-four billion, six hundred forty million, five hundred fifty-four thousand, forty-four".