11638201215 has 32 divisors (see below), whose sum is σ = 18826255872. Its totient is φ = 6138800000.

The previous prime is 11638201213. The next prime is 11638201277. The reversal of 11638201215 is 51210283611.

It is not a de Polignac number, because 11638201215 - 2¹ = 11638201213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11638201213) 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, 1558240 + ... + 1565690.

It is an arithmetic number, because the mean of its divisors is an integer number (588320496).

Almost surely, 2^11638201215 is an apocalyptic number.

11638201215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11638201215 is a deficient number, since it is larger than the sum of its proper divisors (7188054657).

11638201215 is a wasteful number, since it uses less digits than its factorization.

11638201215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591.

The product of its (nonzero) digits is 2880, while the sum is 30.

Adding to 11638201215 its reverse (51210283611), we get a palindrome (62848484826).

The spelling of 11638201215 in words is "eleven billion, six hundred thirty-eight million, two hundred one thousand, two hundred fifteen".