227997487538 has 18 divisors (see below), whose sum is σ = 363315327543. Its totient is φ = 107287533120.

The previous prime is 227997487499. The next prime is 227997487559. The reversal of 227997487538 is 835784799722.

227997487538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 35542429729 + 192455057809 = 188527^2 + 438697^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=337637.

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, 11469728 + ... + 11489588.

Almost surely, 2^227997487538 is an apocalyptic number.

227997487538 is a deficient number, since it is larger than the sum of its proper divisors (135317840005).

227997487538 is an frugal number, since it uses more digits than its factorization.

227997487538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39758 (or 19880 counting only the distinct ones).

The product of its digits is 426746880, while the sum is 71.

The spelling of 227997487538 in words is "two hundred twenty-seven billion, nine hundred ninety-seven million, four hundred eighty-seven thousand, five hundred thirty-eight".