53103068440 has 64 divisors (see below), whose sum is σ = 124862031360. Its totient is φ = 20305783680.

The previous prime is 53103068387. The next prime is 53103068489. The reversal of 53103068440 is 4486030135.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 53103068396 and 53103068405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247606 + ... + 409285.

It is an arithmetic number, because the mean of its divisors is an integer number (1950969240).

Almost surely, 2^53103068440 is an apocalyptic number.

It is an amenable number.

53103068440 is an abundant number, since it is smaller than the sum of its proper divisors (71758962920).

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

53103068440 is a wasteful number, since it uses less digits than its factorization.

53103068440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656992 (or 656988 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 53103068440 its reverse (4486030135), we get a palindrome (57589098575).

The spelling of 53103068440 in words is "fifty-three billion, one hundred three million, sixty-eight thousand, four hundred forty".