101520228385808 has 80 divisors (see below), whose sum is σ = 210118778787456. Its totient is φ = 47401843399680.

The previous prime is 101520228385777. The next prime is 101520228385811. The reversal of 101520228385808 is 808583822025101.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 101520228385808.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32380916 + ... + 35377452.

Almost surely, 2^{101520228385808} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101520228385808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105059389393728).

101520228385808 is an abundant number, since it is smaller than the sum of its proper divisors (108598550401648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101520228385808 is a wasteful number, since it uses less digits than its factorization.

101520228385808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998752 (or 2998746 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 53.

The spelling of 101520228385808 in words is "one hundred one trillion, five hundred twenty billion, two hundred twenty-eight million, three hundred eighty-five thousand, eight hundred eight".