11011777765 has 8 divisors (see below), whose sum is σ = 13521439008. Its totient is φ = 8604551760.

The previous prime is 11011777757. The next prime is 11011777771. The reversal of 11011777765 is 56777711011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11011777765 - 2³ = 11011777757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25608571 + ... + 25609000.

It is an arithmetic number, because the mean of its divisors is an integer number (1690179876).

Almost surely, 2^11011777765 is an apocalyptic number.

It is an amenable number.

11011777765 is a deficient number, since it is larger than the sum of its proper divisors (2509661243).

11011777765 is an equidigital number, since it uses as much as digits as its factorization.

11011777765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51217619.

The product of its (nonzero) digits is 72030, while the sum is 43.

The spelling of 11011777765 in words is "eleven billion, eleven million, seven hundred seventy-seven thousand, seven hundred sixty-five".