101561635828 has 12 divisors (see below), whose sum is σ = 177735154212. Its totient is φ = 50780163200.

The previous prime is 101561635793. The next prime is 101561635873. The reversal of 101561635828 is 828536165101.

It can be written as a sum of positive squares in 2 ways, for example, as 38207739024 + 63353896804 = 195468^2 + 251702^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404478 + ... + 605578.

It is an arithmetic number, because the mean of its divisors is an integer number (14811262851).

Almost surely, 2^101561635828 is an apocalyptic number.

It is an amenable number.

101561635828 is a deficient number, since it is larger than the sum of its proper divisors (76173518384).

101561635828 is a wasteful number, since it uses less digits than its factorization.

101561635828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327362 (or 327360 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 46.

The spelling of 101561635828 in words is "one hundred one billion, five hundred sixty-one million, six hundred thirty-five thousand, eight hundred twenty-eight".