12650777971 has 8 divisors (see below), whose sum is σ = 13634945744. Its totient is φ = 11668186080.

The previous prime is 12650777939. The next prime is 12650778011. The reversal of 12650777971 is 17977705621.

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

It is a cyclic number.

It is not a de Polignac number, because 12650777971 - 2⁵ = 12650777939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12650777921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377265 + ... + 409426.

It is an arithmetic number, because the mean of its divisors is an integer number (1704368218).

Almost surely, 2^12650777971 is an apocalyptic number.

12650777971 is a deficient number, since it is larger than the sum of its proper divisors (984167773).

12650777971 is a wasteful number, since it uses less digits than its factorization.

12650777971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787941.

The product of its (nonzero) digits is 1296540, while the sum is 52.

The spelling of 12650777971 in words is "twelve billion, six hundred fifty million, seven hundred seventy-seven thousand, nine hundred seventy-one".