11764115665 has 16 divisors (see below), whose sum is σ = 14192906112. Its totient is φ = 9360779904.

The previous prime is 11764115663. The next prime is 11764115681. The reversal of 11764115665 is 56651146711.

It is a cyclic number.

It is not a de Polignac number, because 11764115665 - 2¹ = 11764115663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11764115663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 739677 + ... + 755413.

It is an arithmetic number, because the mean of its divisors is an integer number (887056632).

Almost surely, 2^11764115665 is an apocalyptic number.

It is an amenable number.

11764115665 is a deficient number, since it is larger than the sum of its proper divisors (2428790447).

11764115665 is a wasteful number, since it uses less digits than its factorization.

11764115665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16536.

The product of its digits is 151200, while the sum is 43.

It can be divided in two parts, 1176 and 4115665, that added together give a square (4116841 = 2029²).

The spelling of 11764115665 in words is "eleven billion, seven hundred sixty-four million, one hundred fifteen thousand, six hundred sixty-five".