1266171016 has 64 divisors (see below), whose sum is σ = 2762424000. Its totient is φ = 537692160.

The previous prime is 1266171013. The next prime is 1266171097. The reversal of 1266171016 is 6101716621.

It is not an unprimeable number, because it can be changed into a prime (1266171013) 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, 204900 + ... + 210988.

It is an arithmetic number, because the mean of its divisors is an integer number (43162875).

Almost surely, 2^1266171016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1266171016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381212000).

1266171016 is an abundant number, since it is smaller than the sum of its proper divisors (1496252984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1266171016 is a wasteful number, since it uses less digits than its factorization.

1266171016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262 (or 6258 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1266171016 is about 35583.2968680531. The cubic root of 1266171016 is about 1081.8427092114.

Adding to 1266171016 its reverse (6101716621), we get a palindrome (7367887637).

The spelling of 1266171016 in words is "one billion, two hundred sixty-six million, one hundred seventy-one thousand, sixteen".