11512321464 has 96 divisors (see below), whose sum is σ = 35241868800. Its totient is φ = 3116111040.

The previous prime is 11512321459. The next prime is 11512321549. The reversal of 11512321464 is 46412321511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235272 + ... + 279959.

It is an arithmetic number, because the mean of its divisors is an integer number (367102800).

Almost surely, 2^11512321464 is an apocalyptic number.

11512321464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11512321464 is an abundant number, since it is smaller than the sum of its proper divisors (23729547336).

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

11512321464 is a wasteful number, since it uses less digits than its factorization.

11512321464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515273 (or 515262 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 11512321464 its reverse (46412321511), we get a palindrome (57924642975).

The spelling of 11512321464 in words is "eleven billion, five hundred twelve million, three hundred twenty-one thousand, four hundred sixty-four".