47728758722 has 18 divisors (see below), whose sum is σ = 72003767787. Its totient is φ = 23728281600.

The previous prime is 47728758709. The next prime is 47728758739. The reversal of 47728758722 is 22785782774.

It can be written as a sum of positive squares in 5 ways, for example, as 47594221921 + 134536801 = 218161^2 + 11599^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=154481.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 74459522 + ... + 74460162.

Almost surely, 2^47728758722 is an apocalyptic number.

47728758722 is a deficient number, since it is larger than the sum of its proper divisors (24275009065).

47728758722 is an frugal number, since it uses more digits than its factorization.

47728758722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 884 counting only the distinct ones).

The product of its digits is 24586240, while the sum is 59.

The spelling of 47728758722 in words is "forty-seven billion, seven hundred twenty-eight million, seven hundred fifty-eight thousand, seven hundred twenty-two".