11730021797 has 12 divisors (see below), whose sum is σ = 12708954720. Its totient is φ = 10821562128.

The previous prime is 11730021791. The next prime is 11730021859. The reversal of 11730021797 is 79712003711.

It is not a de Polignac number, because 11730021797 - 2²² = 11725827493 is a prime.

It is a super-2 number, since 2×11730021797² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11730021797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11730021791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293354 + ... + 330932.

It is an arithmetic number, because the mean of its divisors is an integer number (1059079560).

Almost surely, 2^11730021797 is an apocalyptic number.

It is an amenable number.

11730021797 is a deficient number, since it is larger than the sum of its proper divisors (978932923).

11730021797 is a wasteful number, since it uses less digits than its factorization.

11730021797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39452 (or 39439 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 38.

The spelling of 11730021797 in words is "eleven billion, seven hundred thirty million, twenty-one thousand, seven hundred ninety-seven".