100665155611 has 4 divisors (see below), whose sum is σ = 100955257272. Its totient is φ = 100375053952.

The previous prime is 100665155593. The next prime is 100665155623. The reversal of 100665155611 is 116551566001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100665155611 - 2¹³ = 100665147419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100665155651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145050310 + ... + 145051003.

It is an arithmetic number, because the mean of its divisors is an integer number (25238814318).

Almost surely, 2^100665155611 is an apocalyptic number.

100665155611 is a deficient number, since it is larger than the sum of its proper divisors (290101661).

100665155611 is an equidigital number, since it uses as much as digits as its factorization.

100665155611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290101660.

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 100665155611 in words is "one hundred billion, six hundred sixty-five million, one hundred fifty-five thousand, six hundred eleven".