11415820417 has 4 divisors (see below), whose sum is σ = 11602965076. Its totient is φ = 11228675760.

The previous prime is 11415820397. The next prime is 11415820439. The reversal of 11415820417 is 71402851411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 215619856 + 11200200561 = 14684^2 + 105831^2 .

It is a cyclic number.

It is not a de Polignac number, because 11415820417 - 2⁷ = 11415820289 is a prime.

It is a super-3 number, since 3×11415820417³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11415820447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93572238 + ... + 93572359.

It is an arithmetic number, because the mean of its divisors is an integer number (2900741269).

Almost surely, 2^11415820417 is an apocalyptic number.

It is an amenable number.

11415820417 is a deficient number, since it is larger than the sum of its proper divisors (187144659).

11415820417 is an equidigital number, since it uses as much as digits as its factorization.

11415820417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187144658.

The product of its (nonzero) digits is 8960, while the sum is 34.

The spelling of 11415820417 in words is "eleven billion, four hundred fifteen million, eight hundred twenty thousand, four hundred seventeen".