101821318636 has 12 divisors (see below), whose sum is σ = 182533339800. Its totient is φ = 49668935840.

The previous prime is 101821318603. The next prime is 101821318639. The reversal of 101821318636 is 636813128101.

It is a happy number.

101821318636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (101821318639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310430686 + ... + 310431013.

It is an arithmetic number, because the mean of its divisors is an integer number (15211111650).

Almost surely, 2^101821318636 is an apocalyptic number.

It is an amenable number.

101821318636 is a deficient number, since it is larger than the sum of its proper divisors (80712021164).

101821318636 is a wasteful number, since it uses less digits than its factorization.

101821318636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620861744 (or 620861742 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 101821318636 in words is "one hundred one billion, eight hundred twenty-one million, three hundred eighteen thousand, six hundred thirty-six".