53213454440 has 64 divisors (see below), whose sum is σ = 121031539200. Its totient is φ = 21054523392.

The previous prime is 53213454407. The next prime is 53213454461. The reversal of 53213454440 is 4445431235.

It is a self number, because there is not a number n which added to its sum of digits gives 53213454440.

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, 3820529 + ... + 3834431.

It is an arithmetic number, because the mean of its divisors is an integer number (1891117800).

Almost surely, 2^53213454440 is an apocalyptic number.

It is an amenable number.

53213454440 is an abundant number, since it is smaller than the sum of its proper divisors (67818084760).

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

53213454440 is a wasteful number, since it uses less digits than its factorization.

53213454440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14946 (or 14942 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 53213454440 its reverse (4445431235), we get a palindrome (57658885675).

The spelling of 53213454440 in words is "fifty-three billion, two hundred thirteen million, four hundred fifty-four thousand, four hundred forty".