4728332736561 has 16 divisors (see below), whose sum is σ = 7205137639424. Its totient is φ = 2701882227024.

The previous prime is 4728332736521. The next prime is 4728332736571. The reversal of 4728332736561 is 1656372338274.

It is not a de Polignac number, because 4728332736561 - 2⁶ = 4728332736497 is a prime.

It is a super-2 number, since 2×4728332736561² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4728332736521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1892250 + ... + 3610716.

It is an arithmetic number, because the mean of its divisors is an integer number (450321102464).

Almost surely, 2^{4728332736561} is an apocalyptic number.

It is an amenable number.

4728332736561 is a deficient number, since it is larger than the sum of its proper divisors (2476804902863).

4728332736561 is a wasteful number, since it uses less digits than its factorization.

4728332736561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849500.

The product of its digits is 30481920, while the sum is 57.

The spelling of 4728332736561 in words is "four trillion, seven hundred twenty-eight billion, three hundred thirty-two million, seven hundred thirty-six thousand, five hundred sixty-one".