11620665766 has 32 divisors (see below), whose sum is σ = 18259008768. Its totient is φ = 5540382720.

The previous prime is 11620665733. The next prime is 11620665781. The reversal of 11620665766 is 66756602611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397116 + ... + 1405408.

It is an arithmetic number, because the mean of its divisors is an integer number (570594024).

Almost surely, 2^11620665766 is an apocalyptic number.

11620665766 is a deficient number, since it is larger than the sum of its proper divisors (6638343002).

11620665766 is a wasteful number, since it uses less digits than its factorization.

11620665766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8656.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 11620665766 in words is "eleven billion, six hundred twenty million, six hundred sixty-five thousand, seven hundred sixty-six".