11661007506776 has 64 divisors (see below), whose sum is σ = 22717552546080. Its totient is φ = 5606919014400.

The previous prime is 11661007506773. The next prime is 11661007506793. The reversal of 11661007506776 is 67760570016611.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11661007506773) 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, 13288826 + ... + 14139126.

Almost surely, 2^{11661007506776} is an apocalyptic number.

It is an amenable number.

11661007506776 is a deficient number, since it is larger than the sum of its proper divisors (11056545039304).

11661007506776 is a wasteful number, since it uses less digits than its factorization.

11661007506776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850884 (or 850880 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 53.

The spelling of 11661007506776 in words is "eleven trillion, six hundred sixty-one billion, seven million, five hundred six thousand, seven hundred seventy-six".