101806545243 has 8 divisors (see below), whose sum is σ = 146183757328. Its totient is φ = 62650181664.

The previous prime is 101806545241. The next prime is 101806545293. The reversal of 101806545243 is 342545608101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101806545243 - 2¹ = 101806545241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2610424237 = 101806545243 / (1 + 0 + 1 + 8 + 0 + 6 + 5 + 4 + 5 + 2 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101806545241) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1305212080 + ... + 1305212157.

It is an arithmetic number, because the mean of its divisors is an integer number (18272969666).

Almost surely, 2^101806545243 is an apocalyptic number.

101806545243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101806545243 is a deficient number, since it is larger than the sum of its proper divisors (44377212085).

101806545243 is a wasteful number, since it uses less digits than its factorization.

101806545243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610424253.

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 101806545243 in words is "one hundred one billion, eight hundred six million, five hundred forty-five thousand, two hundred forty-three".