534403621728 has 72 divisors (see below), whose sum is σ = 1552044600288. Its totient is φ = 174344439552.

The previous prime is 534403621723. The next prime is 534403621793. The reversal of 534403621728 is 827126304435.

534403621728 is a `hidden beast` number, since 5 + 3 + 4 + 403 + 6 + 217 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534403621721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19726551 + ... + 19753622.

It is an arithmetic number, because the mean of its divisors is an integer number (21556175004).

Almost surely, 2^534403621728 is an apocalyptic number.

It is an amenable number.

534403621728 is an abundant number, since it is smaller than the sum of its proper divisors (1017640978560).

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

534403621728 is a wasteful number, since it uses less digits than its factorization.

534403621728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39480236 (or 39480225 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 534403621728 in words is "five hundred thirty-four billion, four hundred three million, six hundred twenty-one thousand, seven hundred twenty-eight".