11121516361065 has 32 divisors (see below), whose sum is σ = 19453669088256. Its totient is φ = 5380703744960.

The previous prime is 11121516360991. The next prime is 11121516361069. The reversal of 11121516361065 is 56016361512111.

It is not a de Polignac number, because 11121516361065 - 2¹² = 11121516356969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11121516361069) 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, 72089037 + ... + 72243146.

It is an arithmetic number, because the mean of its divisors is an integer number (607927159008).

Almost surely, 2^{11121516361065} is an apocalyptic number.

11121516361065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11121516361065 is a deficient number, since it is larger than the sum of its proper divisors (8332152727191).

11121516361065 is a wasteful number, since it uses less digits than its factorization.

11121516361065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144332669.

The product of its (nonzero) digits is 32400, while the sum is 39.

Adding to 11121516361065 its reverse (56016361512111), we get a palindrome (67137877873176).

The spelling of 11121516361065 in words is "eleven trillion, one hundred twenty-one billion, five hundred sixteen million, three hundred sixty-one thousand, sixty-five".