1266041305061 has 24 divisors (see below), whose sum is σ = 1404721152576. Its totient is φ = 1139854584960.

The previous prime is 1266041305051. The next prime is 1266041305093. The reversal of 1266041305061 is 1605031406621.

It is a de Polignac number, because none of the positive numbers 2^k-1266041305061 is a prime.

It is a super-2 number, since 2×1266041305061² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266041305051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29378216 + ... + 29421278.

It is an arithmetic number, because the mean of its divisors is an integer number (58530048024).

Almost surely, 2^{1266041305061} is an apocalyptic number.

It is an amenable number.

1266041305061 is a deficient number, since it is larger than the sum of its proper divisors (138679847515).

1266041305061 is a wasteful number, since it uses less digits than its factorization.

1266041305061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47373 (or 47360 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 1266041305061 in words is "one trillion, two hundred sixty-six billion, forty-one million, three hundred five thousand, sixty-one".