105612719677994 has 8 divisors (see below), whose sum is σ = 158457784410660. Its totient is φ = 52793458207776.

The previous prime is 105612719677991. The next prime is 105612719678033. The reversal of 105612719677994 is 499776917216501.

It can be written as a sum of positive squares in 2 ways, for example, as 103944651855625 + 1668067822369 = 10195325^2 + 1291537^2 .

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

It is a super-2 number, since 2×105612719677994² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (105612719677991) 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, 6450805379 + ... + 6450821750.

Almost surely, 2^{105612719677994} is an apocalyptic number.

105612719677994 is a deficient number, since it is larger than the sum of its proper divisors (52845064732666).

105612719677994 is a wasteful number, since it uses less digits than its factorization.

105612719677994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12901631224.

The product of its (nonzero) digits is 360067680, while the sum is 74.

The spelling of 105612719677994 in words is "one hundred five trillion, six hundred twelve billion, seven hundred nineteen million, six hundred seventy-seven thousand, nine hundred ninety-four".