105723863513 has 4 divisors (see below), whose sum is σ = 105795737088. Its totient is φ = 105651989940.

The previous prime is 105723863501. The next prime is 105723863563. The reversal of 105723863513 is 315368327501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315368327501 = 2593 ⋅121622957.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105723863513 is a prime.

It is a super-2 number, since 2×105723863513² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105723863563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35934581 + ... + 35937522.

It is an arithmetic number, because the mean of its divisors is an integer number (26448934272).

Almost surely, 2^105723863513 is an apocalyptic number.

It is an amenable number.

105723863513 is a deficient number, since it is larger than the sum of its proper divisors (71873575).

105723863513 is an equidigital number, since it uses as much as digits as its factorization.

105723863513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71873574.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 105723863513 in words is "one hundred five billion, seven hundred twenty-three million, eight hundred sixty-three thousand, five hundred thirteen".