105666615015 has 32 divisors (see below), whose sum is σ = 183088926720. Its totient is φ = 51729853056.

The previous prime is 105666615007. The next prime is 105666615073. The reversal of 105666615015 is 510516666501.

It is not a de Polignac number, because 105666615015 - 2³ = 105666615007 is a prime.

It is a super-2 number, since 2×105666615015² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1478727 + ... + 1548536.

It is an arithmetic number, because the mean of its divisors is an integer number (5721528960).

Almost surely, 2^105666615015 is an apocalyptic number.

105666615015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105666615015 is a deficient number, since it is larger than the sum of its proper divisors (77422311705).

105666615015 is a wasteful number, since it uses less digits than its factorization.

105666615015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027463.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 105666615015 in words is "one hundred five billion, six hundred sixty-six million, six hundred fifteen thousand, fifteen".