11513021641 has 8 divisors (see below), whose sum is σ = 12571973568. Its totient is φ = 10456122000.

The previous prime is 11513021623. The next prime is 11513021647. The reversal of 11513021641 is 14612031511.

11513021641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11513021641 - 2²⁹ = 10976150729 is a prime.

It is a super-2 number, since 2×11513021641² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11513021647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501325 + ... + 523786.

It is an arithmetic number, because the mean of its divisors is an integer number (1571496696).

Almost surely, 2^11513021641 is an apocalyptic number.

11513021641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11513021641 is a deficient number, since it is larger than the sum of its proper divisors (1058951927).

11513021641 is a wasteful number, since it uses less digits than its factorization.

11513021641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026143.

The product of its (nonzero) digits is 720, while the sum is 25.

The spelling of 11513021641 in words is "eleven billion, five hundred thirteen million, twenty-one thousand, six hundred forty-one".