101105154985 has 4 divisors (see below), whose sum is σ = 121326185988. Its totient is φ = 80884123984.

The previous prime is 101105154967. The next prime is 101105155033. The reversal of 101105154985 is 589451501101.

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 63808275609 + 37296879376 = 252603^2 + 193124^2 .

It is a cyclic number.

It is not a de Polignac number, because 101105154985 - 2²⁹ = 100568284073 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10110515494 + ... + 10110515503.

It is an arithmetic number, because the mean of its divisors is an integer number (30331546497).

Almost surely, 2^101105154985 is an apocalyptic number.

It is an amenable number.

101105154985 is a deficient number, since it is larger than the sum of its proper divisors (20221031003).

101105154985 is an equidigital number, since it uses as much as digits as its factorization.

101105154985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20221031002.

The product of its (nonzero) digits is 36000, while the sum is 40.

The spelling of 101105154985 in words is "one hundred one billion, one hundred five million, one hundred fifty-four thousand, nine hundred eighty-five".