11601820365511 has 8 divisors (see below), whose sum is σ = 11768007310848. Its totient is φ = 11435710671000.

The previous prime is 11601820365503. The next prime is 11601820365523. The reversal of 11601820365511 is 11556302810611.

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 11601820365511 - 2³ = 11601820365503 is a prime.

It is a super-2 number, since 2×11601820365511² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601820765511) 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, 19010155 + ... + 19610956.

It is an arithmetic number, because the mean of its divisors is an integer number (1471000913856).

Almost surely, 2^{11601820365511} is an apocalyptic number.

11601820365511 is a deficient number, since it is larger than the sum of its proper divisors (166186945337).

11601820365511 is an equidigital number, since it uses as much as digits as its factorization.

11601820365511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38625413.

The product of its (nonzero) digits is 43200, while the sum is 40.

The spelling of 11601820365511 in words is "eleven trillion, six hundred one billion, eight hundred twenty million, three hundred sixty-five thousand, five hundred eleven".