53106066440 has 64 divisors (see below), whose sum is σ = 136616025600. Its totient is φ = 18200118528.

The previous prime is 53106066373. The next prime is 53106066463. The reversal of 53106066440 is 4466060135.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 53106066440.

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, 646406 + ... + 723914.

It is an arithmetic number, because the mean of its divisors is an integer number (2134625400).

Almost surely, 2^53106066440 is an apocalyptic number.

It is an amenable number.

53106066440 is an abundant number, since it is smaller than the sum of its proper divisors (83509959160).

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

53106066440 is a wasteful number, since it uses less digits than its factorization.

53106066440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79974 (or 79970 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 53106066440 in words is "fifty-three billion, one hundred six million, sixty-six thousand, four hundred forty".