201515053560 has 128 divisors (see below), whose sum is σ = 640758988800. Its totient is φ = 50524784640.

The previous prime is 201515053559. The next prime is 201515053567. The reversal of 201515053560 is 65350515102.

It is a super-2 number, since 2×201515053560² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201515053567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1971801 + ... + 2071479.

It is an arithmetic number, because the mean of its divisors is an integer number (5005929600).

Almost surely, 2^201515053560 is an apocalyptic number.

201515053560 is a gapful number since it is divisible by the number (20) 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 201515053560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320379494400).

201515053560 is an abundant number, since it is smaller than the sum of its proper divisors (439243935240).

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

201515053560 is a wasteful number, since it uses less digits than its factorization.

201515053560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100701 (or 100697 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 33.

Adding to 201515053560 its reverse (65350515102), we get a palindrome (266865568662).

The spelling of 201515053560 in words is "two hundred one billion, five hundred fifteen million, fifty-three thousand, five hundred sixty".