105450450139 has 4 divisors (see below), whose sum is σ = 105558384024. Its totient is φ = 105342516256.

The previous prime is 105450450137. The next prime is 105450450143. The reversal of 105450450139 is 931054054501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931054054501 = 239 ⋅3895623659.

It is a cyclic number.

It is not a de Polignac number, because 105450450139 - 2¹ = 105450450137 is a prime.

It is a super-2 number, since 2×105450450139² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105450450098 and 105450450107.

It is not an unprimeable number, because it can be changed into a prime (105450450137) 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 3 ways as a sum of consecutive naturals, for example, 53965477 + ... + 53967430.

It is an arithmetic number, because the mean of its divisors is an integer number (26389596006).

Almost surely, 2^105450450139 is an apocalyptic number.

105450450139 is a deficient number, since it is larger than the sum of its proper divisors (107933885).

105450450139 is an equidigital number, since it uses as much as digits as its factorization.

105450450139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107933884.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 105450450139 in words is "one hundred five billion, four hundred fifty million, four hundred fifty thousand, one hundred thirty-nine".