11420993517 has 8 divisors (see below), whose sum is σ = 15253331520. Its totient is φ = 7601325600.

The previous prime is 11420993509. The next prime is 11420993531. The reversal of 11420993517 is 71539902411.

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

It is not a de Polignac number, because 11420993517 - 2³ = 11420993509 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11420993587) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3165417 + ... + 3169022.

It is an arithmetic number, because the mean of its divisors is an integer number (1906666440).

Almost surely, 2^11420993517 is an apocalyptic number.

It is an amenable number.

11420993517 is a deficient number, since it is larger than the sum of its proper divisors (3832338003).

11420993517 is an equidigital number, since it uses as much as digits as its factorization.

11420993517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6335043.

The product of its (nonzero) digits is 68040, while the sum is 42.

The spelling of 11420993517 in words is "eleven billion, four hundred twenty million, nine hundred ninety-three thousand, five hundred seventeen".