507644401144 has 64 divisors (see below), whose sum is σ = 1022921136000. Its totient is φ = 235443761280.

The previous prime is 507644401141. The next prime is 507644401181. The reversal of 507644401144 is 441104446705.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 507644401097 and 507644401106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (507644401141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3891327 + ... + 4019665.

It is an arithmetic number, because the mean of its divisors is an integer number (15983142750).

Almost surely, 2^507644401144 is an apocalyptic number.

It is an amenable number.

507644401144 is an abundant number, since it is smaller than the sum of its proper divisors (515276734856).

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

507644401144 is a wasteful number, since it uses less digits than its factorization.

507644401144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128908 (or 128904 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

Adding to 507644401144 its reverse (441104446705), we get a palindrome (948748847849).

The spelling of 507644401144 in words is "five hundred seven billion, six hundred forty-four million, four hundred one thousand, one hundred forty-four".