53430240040 has 16 divisors (see below), whose sum is σ = 120218040180. Its totient is φ = 21372096000.

The previous prime is 53430240037. The next prime is 53430240077. The reversal of 53430240040 is 4004203435.

It can be written as a sum of positive squares in 2 ways, for example, as 46525627204 + 6904612836 = 215698^2 + 83094^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53430239987 and 53430240014.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 667877961 + ... + 667878040.

Almost surely, 2^53430240040 is an apocalyptic number.

It is an amenable number.

53430240040 is an abundant number, since it is smaller than the sum of its proper divisors (66787800140).

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

53430240040 is a wasteful number, since it uses less digits than its factorization.

53430240040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335756012 (or 1335756008 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 53430240040 its reverse (4004203435), we get a palindrome (57434443475).

The spelling of 53430240040 in words is "fifty-three billion, four hundred thirty million, two hundred forty thousand, forty".