12150505705 has 16 divisors (see below), whose sum is σ = 15891382080. Its totient is φ = 8864572608.

The previous prime is 12150505699. The next prime is 12150505709. The reversal of 12150505705 is 50750505121.

It is a cyclic number.

It is not a de Polignac number, because 12150505705 - 2¹⁷ = 12150374633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12150505709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1120695 + ... + 1131484.

It is an arithmetic number, because the mean of its divisors is an integer number (993211380).

Almost surely, 2^12150505705 is an apocalyptic number.

It is an amenable number.

12150505705 is a deficient number, since it is larger than the sum of its proper divisors (3740876375).

12150505705 is a wasteful number, since it uses less digits than its factorization.

12150505705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252280.

The product of its (nonzero) digits is 8750, while the sum is 31.

The spelling of 12150505705 in words is "twelve billion, one hundred fifty million, five hundred five thousand, seven hundred five".