11720090335217 has 4 divisors (see below), whose sum is σ = 12785553092976. Its totient is φ = 10654627577460.

The previous prime is 11720090335181. The next prime is 11720090335241. The reversal of 11720090335217 is 71253309002711.

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 a cyclic number.

It is not a de Polignac number, because 11720090335217 - 2¹⁰ = 11720090334193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11720090535217) 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, 532731378863 + ... + 532731378884.

It is an arithmetic number, because the mean of its divisors is an integer number (3196388273244).

Almost surely, 2^{11720090335217} is an apocalyptic number.

It is an amenable number.

11720090335217 is a deficient number, since it is larger than the sum of its proper divisors (1065462757759).

11720090335217 is a wasteful number, since it uses less digits than its factorization.

11720090335217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065462757758.

The product of its (nonzero) digits is 79380, while the sum is 41.

Adding to 11720090335217 its reverse (71253309002711), we get a palindrome (82973399337928).

The spelling of 11720090335217 in words is "eleven trillion, seven hundred twenty billion, ninety million, three hundred thirty-five thousand, two hundred seventeen".