11765358836 has 72 divisors (see below), whose sum is σ = 26158912416. Its totient is φ = 4578530880.

The previous prime is 11765358821. The next prime is 11765358853. The reversal of 11765358836 is 63885356711.

It is a happy number.

It is a super-4 number, since 4×11765358836⁴ (a number of 41 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2181335 + ... + 2186721.

It is an arithmetic number, because the mean of its divisors is an integer number (363318228).

Almost surely, 2^11765358836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11765358836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13079456208).

11765358836 is an abundant number, since it is smaller than the sum of its proper divisors (14393553580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11765358836 is a wasteful number, since it uses less digits than its factorization.

11765358836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429 (or 6420 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 53.

The spelling of 11765358836 in words is "eleven billion, seven hundred sixty-five million, three hundred fifty-eight thousand, eight hundred thirty-six".