12920927305 has 32 divisors (see below), whose sum is σ = 18336584448. Its totient is φ = 8616672000.

The previous prime is 12920927297. The next prime is 12920927311. The reversal of 12920927305 is 50372902921.

It is not a de Polignac number, because 12920927305 - 2³ = 12920927297 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48127 + ... + 167803.

It is an arithmetic number, because the mean of its divisors is an integer number (573018264).

Almost surely, 2^12920927305 is an apocalyptic number.

It is an amenable number.

12920927305 is a deficient number, since it is larger than the sum of its proper divisors (5415657143).

12920927305 is a wasteful number, since it uses less digits than its factorization.

12920927305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119857.

The product of its (nonzero) digits is 68040, while the sum is 40.

The spelling of 12920927305 in words is "twelve billion, nine hundred twenty million, nine hundred twenty-seven thousand, three hundred five".