53166973440 has 320 divisors, whose sum is σ = 204476912640. Its totient is φ = 11512627200.

The previous prime is 53166973417. The next prime is 53166973441. The reversal of 53166973440 is 4437966135.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 53166973440.

It is not an unprimeable number, because it can be changed into a prime (53166973441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 995415 + ... + 1047465.

It is an arithmetic number, because the mean of its divisors is an integer number (638990352).

Almost surely, 2^53166973440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53166973440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102238456320).

53166973440 is an abundant number, since it is smaller than the sum of its proper divisors (151309939200).

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

53166973440 is a wasteful number, since it uses less digits than its factorization.

53166973440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52103 (or 52087 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 53166973440 in words is "fifty-three billion, one hundred sixty-six million, nine hundred seventy-three thousand, four hundred forty".