11230777765 has 4 divisors (see below), whose sum is σ = 13476933324. Its totient is φ = 8984622208.

The previous prime is 11230777763. The next prime is 11230777777. The reversal of 11230777765 is 56777703211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8103060289 + 3127717476 = 90017^2 + 55926^2 .

It is a cyclic number.

It is not a de Polignac number, because 11230777765 - 2¹ = 11230777763 is a prime.

It is a super-2 number, since 2×11230777765² (a number of 21 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 (11230777763) 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, 1123077772 + ... + 1123077781.

It is an arithmetic number, because the mean of its divisors is an integer number (3369233331).

Almost surely, 2^11230777765 is an apocalyptic number.

It is an amenable number.

11230777765 is a deficient number, since it is larger than the sum of its proper divisors (2246155559).

11230777765 is an equidigital number, since it uses as much as digits as its factorization.

11230777765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2246155558.

The product of its (nonzero) digits is 432180, while the sum is 46.

The spelling of 11230777765 in words is "eleven billion, two hundred thirty million, seven hundred seventy-seven thousand, seven hundred sixty-five".