201515513233146 has 24 divisors (see below), whose sum is σ = 468832010379840. Its totient is φ = 57575860923672.

The previous prime is 201515513233123. The next prime is 201515513233157. The reversal of 201515513233146 is 641332315515102.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201515513233098 and 201515513233107.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 342713457586 + ... + 342713458173.

It is an arithmetic number, because the mean of its divisors is an integer number (19534667099160).

Almost surely, 2^{201515513233146} is an apocalyptic number.

201515513233146 is an abundant number, since it is smaller than the sum of its proper divisors (267316497146694).

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

201515513233146 is a wasteful number, since it uses less digits than its factorization.

201515513233146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685426915778 (or 685426915771 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

Adding to 201515513233146 its reverse (641332315515102), we get a palindrome (842847828748248).

The spelling of 201515513233146 in words is "two hundred one trillion, five hundred fifteen billion, five hundred thirteen million, two hundred thirty-three thousand, one hundred forty-six".