4643728746525 has 180 divisors, whose sum is σ = 9471704834592. Its totient is φ = 2247494040000.

The previous prime is 4643728746493. The next prime is 4643728746529. The reversal of 4643728746525 is 5256478273464.

4643728746525 is a `hidden beast` number, since 4 + 6 + 4 + 3 + 72 + 87 + 465 + 25 = 666.

It is not a de Polignac number, because 4643728746525 - 2⁵ = 4643728746493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4643728746529) by changing a digit.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 139892680 + ... + 139925870.

Almost surely, 2^{4643728746525} is an apocalyptic number.

4643728746525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4643728746525 is an abundant number, since it is smaller than the sum of its proper divisors (4827976088067).

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

4643728746525 is a wasteful number, since it uses less digits than its factorization.

4643728746525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33806 (or 33781 counting only the distinct ones).

The product of its digits is 270950400, while the sum is 63.

The spelling of 4643728746525 in words is "four trillion, six hundred forty-three billion, seven hundred twenty-eight million, seven hundred forty-six thousand, five hundred twenty-five".