11513351665212 has 48 divisors (see below), whose sum is σ = 26954058671232. Its totient is φ = 3824997946560.

The previous prime is 11513351665187. The next prime is 11513351665463. The reversal of 11513351665212 is 21256615331511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8625783 + ... + 9870705.

It is an arithmetic number, because the mean of its divisors is an integer number (561542888984).

Almost surely, 2^{11513351665212} is an apocalyptic number.

11513351665212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11513351665212 is an abundant number, since it is smaller than the sum of its proper divisors (15440707006020).

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

11513351665212 is a wasteful number, since it uses less digits than its factorization.

11513351665212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247498 (or 1247496 counting only the distinct ones).

The product of its digits is 162000, while the sum is 42.

Adding to 11513351665212 its reverse (21256615331511), we get a palindrome (32769966996723).

The spelling of 11513351665212 in words is "eleven trillion, five hundred thirteen billion, three hundred fifty-one million, six hundred sixty-five thousand, two hundred twelve".