12705648115 has 32 divisors (see below), whose sum is σ = 15868427904. Its totient is φ = 9758361600.

The previous prime is 12705648101. The next prime is 12705648143. The reversal of 12705648115 is 51184650721.

It is not a de Polignac number, because 12705648115 - 2⁵ = 12705648083 is a prime.

It is a super-2 number, since 2×12705648115² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4384347 + ... + 4387243.

It is an arithmetic number, because the mean of its divisors is an integer number (495888372).

Almost surely, 2^12705648115 is an apocalyptic number.

12705648115 is a deficient number, since it is larger than the sum of its proper divisors (3162779789).

12705648115 is a wasteful number, since it uses less digits than its factorization.

12705648115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3247.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 12705648115 in words is "twelve billion, seven hundred five million, six hundred forty-eight thousand, one hundred fifteen".