105645450014531 has 4 divisors (see below), whose sum is σ = 120737657159472. Its totient is φ = 90553242869592.

The previous prime is 105645450014519. The next prime is 105645450014563. The reversal of 105645450014531 is 135410054546501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105645450014531 is a prime.

It is a super-2 number, since 2×105645450014531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105645456014531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7546103572460 + ... + 7546103572473.

It is an arithmetic number, because the mean of its divisors is an integer number (30184414289868).

Almost surely, 2^{105645450014531} is an apocalyptic number.

105645450014531 is a deficient number, since it is larger than the sum of its proper divisors (15092207144941).

105645450014531 is an equidigital number, since it uses as much as digits as its factorization.

105645450014531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15092207144940.

The product of its (nonzero) digits is 720000, while the sum is 44.

The spelling of 105645450014531 in words is "one hundred five trillion, six hundred forty-five billion, four hundred fifty million, fourteen thousand, five hundred thirty-one".