201551403350 has 24 divisors (see below), whose sum is σ = 408966121368. Its totient is φ = 73291419200.

The previous prime is 201551403341. The next prime is 201551403353. The reversal of 201551403350 is 53304155102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201551403353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183227999 + ... + 183229098.

It is an arithmetic number, because the mean of its divisors is an integer number (17040255057).

Almost surely, 2^201551403350 is an apocalyptic number.

201551403350 is an abundant number, since it is smaller than the sum of its proper divisors (207414718018).

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

201551403350 is a wasteful number, since it uses less digits than its factorization.

201551403350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366457120 (or 366457115 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

Adding to 201551403350 its reverse (53304155102), we get a palindrome (254855558452).

The spelling of 201551403350 in words is "two hundred one billion, five hundred fifty-one million, four hundred three thousand, three hundred fifty".