11620730217 has 4 divisors (see below), whose sum is σ = 15494306960. Its totient is φ = 7747153476.

The previous prime is 11620730207. The next prime is 11620730249. The reversal of 11620730217 is 71203702611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11620730217 - 2¹⁴ = 11620713833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11620730207) 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, 1936788367 + ... + 1936788372.

It is an arithmetic number, because the mean of its divisors is an integer number (3873576740).

Almost surely, 2^11620730217 is an apocalyptic number.

It is an amenable number.

11620730217 is a deficient number, since it is larger than the sum of its proper divisors (3873576743).

11620730217 is an equidigital number, since it uses as much as digits as its factorization.

11620730217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873576742.

The product of its (nonzero) digits is 3528, while the sum is 30.

The spelling of 11620730217 in words is "eleven billion, six hundred twenty million, seven hundred thirty thousand, two hundred seventeen".