53445452544 has 432 divisors, whose sum is σ = 176579230464. Its totient is φ = 15388876800.

The previous prime is 53445452539. The next prime is 53445452549. The reversal of 53445452544 is 44525454435.

It is a happy number.

53445452544 is a `hidden beast` number, since 5 + 3 + 4 + 4 + 54 + 52 + 544 = 666.

It is an interprime number because it is at equal distance from previous prime (53445452539) and next prime (53445452549).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 53445452544.

It is not an unprimeable number, because it can be changed into a prime (53445452549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161466459 + ... + 161466789.

Almost surely, 2^53445452544 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 53445452544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88289615232).

53445452544 is an abundant number, since it is smaller than the sum of its proper divisors (123133777920).

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

53445452544 is a wasteful number, since it uses less digits than its factorization.

53445452544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 647 counting only the distinct ones).

The product of its digits is 3840000, while the sum is 45.

The spelling of 53445452544 in words is "fifty-three billion, four hundred forty-five million, four hundred fifty-two thousand, five hundred forty-four".