11517412621 has 8 divisors (see below), whose sum is σ = 13530946464. Its totient is φ = 9664961520.

The previous prime is 11517412601. The next prime is 11517412631. The reversal of 11517412621 is 12621471511.

It is a happy number.

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 11517412621 - 2²⁵ = 11483858189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11517412601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40270531 + ... + 40270816.

It is an arithmetic number, because the mean of its divisors is an integer number (1691368308).

Almost surely, 2^11517412621 is an apocalyptic number.

11517412621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11517412621 is a deficient number, since it is larger than the sum of its proper divisors (2013533843).

11517412621 is a wasteful number, since it uses less digits than its factorization.

11517412621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80541371.

The product of its digits is 3360, while the sum is 31.

The spelling of 11517412621 in words is "eleven billion, five hundred seventeen million, four hundred twelve thousand, six hundred twenty-one".