101042415505 has 4 divisors (see below), whose sum is σ = 121250898612. Its totient is φ = 80833932400.

The previous prime is 101042415497. The next prime is 101042415521. The reversal of 101042415505 is 505514240101.

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 24727248001 + 76315167504 = 157249^2 + 276252^2 .

It is not a de Polignac number, because 101042415505 - 2³ = 101042415497 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, 10104241546 + ... + 10104241555.

It is an arithmetic number, because the mean of its divisors is an integer number (30312724653).

Almost surely, 2^101042415505 is an apocalyptic number.

It is an amenable number.

101042415505 is a deficient number, since it is larger than the sum of its proper divisors (20208483107).

101042415505 is an equidigital number, since it uses as much as digits as its factorization.

101042415505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20208483106.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 101042415505 its reverse (505514240101), we get a palindrome (606556655606).

The spelling of 101042415505 in words is "one hundred one billion, forty-two million, four hundred fifteen thousand, five hundred five".