11761765506 has 24 divisors (see below), whose sum is σ = 25485926700. Its totient is φ = 3920265216.

The previous prime is 11761765501. The next prime is 11761765523. The reversal of 11761765506 is 60556716711.

11761765506 is a `hidden beast` number, since 1 + 1 + 76 + 1 + 76 + 5 + 506 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11738639025 + 23126481 = 108345^2 + 4809^2 .

It is not an unprimeable number, because it can be changed into a prime (11761765501) 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, 314070 + ... + 349518.

Almost surely, 2^11761765506 is an apocalyptic number.

11761765506 is an abundant number, since it is smaller than the sum of its proper divisors (13724161194).

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

11761765506 is a wasteful number, since it uses less digits than its factorization.

11761765506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53890 (or 53887 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 11761765506 in words is "eleven billion, seven hundred sixty-one million, seven hundred sixty-five thousand, five hundred six".