53434921968 has 160 divisors (see below), whose sum is σ = 162521651520. Its totient is φ = 16751370240.

The previous prime is 53434921963. The next prime is 53434921987. The reversal of 53434921968 is 86912943435.

53434921968 is a `hidden beast` number, since 53 + 43 + 492 + 1 + 9 + 68 = 666.

53434921968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53434921963) 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, 17455158 + ... + 17458218.

It is an arithmetic number, because the mean of its divisors is an integer number (1015760322).

Almost surely, 2^53434921968 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 53434921968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81260825760).

53434921968 is an abundant number, since it is smaller than the sum of its proper divisors (109086729552).

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

53434921968 is a wasteful number, since it uses less digits than its factorization.

53434921968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5472 (or 5460 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 53434921968 in words is "fifty-three billion, four hundred thirty-four million, nine hundred twenty-one thousand, nine hundred sixty-eight".