10201520520 has 96 divisors (see below), whose sum is σ = 33220675800. Its totient is φ = 2715012096.

The previous prime is 10201520519. The next prime is 10201520543. The reversal of 10201520520 is 2502510201.

It can be written as a sum of positive squares in 4 ways, for example, as 10128007044 + 73513476 = 100638^2 + 8574^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10201520493 and 10201520502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155404 + ... + 211076.

Almost surely, 2^10201520520 is an apocalyptic number.

10201520520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10201520520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16610337900).

10201520520 is an abundant number, since it is smaller than the sum of its proper divisors (23019155280).

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

10201520520 is a wasteful number, since it uses less digits than its factorization.

10201520520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56199 (or 56192 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The spelling of 10201520520 in words is "ten billion, two hundred one million, five hundred twenty thousand, five hundred twenty".