101550066505 has 4 divisors (see below), whose sum is σ = 121860079812. Its totient is φ = 81240053200.

The previous prime is 101550066493. The next prime is 101550066539. The reversal of 101550066505 is 505660055101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 24552696249 + 76997370256 = 156693^2 + 277484^2 .

It is not a de Polignac number, because 101550066505 - 2⁷ = 101550066377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10155006646 + ... + 10155006655.

It is an arithmetic number, because the mean of its divisors is an integer number (30465019953).

Almost surely, 2^101550066505 is an apocalyptic number.

It is an amenable number.

101550066505 is a deficient number, since it is larger than the sum of its proper divisors (20310013307).

101550066505 is an equidigital number, since it uses as much as digits as its factorization.

101550066505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20310013306.

The product of its (nonzero) digits is 22500, while the sum is 34.

The spelling of 101550066505 in words is "one hundred one billion, five hundred fifty million, sixty-six thousand, five hundred five".