201253215782 has 16 divisors (see below), whose sum is σ = 302785604304. Its totient is φ = 100324980000.

The previous prime is 201253215781. The next prime is 201253215809. The reversal of 201253215782 is 287512352102.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201253215781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291157 + ... + 1438607.

It is an arithmetic number, because the mean of its divisors is an integer number (18924100269).

Almost surely, 2^201253215782 is an apocalyptic number.

201253215782 is a deficient number, since it is larger than the sum of its proper divisors (101532388522).

201253215782 is a wasteful number, since it uses less digits than its factorization.

201253215782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149495.

The product of its (nonzero) digits is 67200, while the sum is 38.

Adding to 201253215782 its reverse (287512352102), we get a palindrome (488765567884).

The spelling of 201253215782 in words is "two hundred one billion, two hundred fifty-three million, two hundred fifteen thousand, seven hundred eighty-two".