1266790701960 has 192 divisors, whose sum is σ = 4952866089600. Its totient is φ = 274312562688.

The previous prime is 1266790701929. The next prime is 1266790701997. The reversal of 1266790701960 is 691070976621.

It is a junction number, because it is equal to n+sod(n) for n = 1266790701897 and 1266790701906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13180929 + ... + 13276688.

It is an arithmetic number, because the mean of its divisors is an integer number (25796177550).

Almost surely, 2^{1266790701960} is an apocalyptic number.

1266790701960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266790701960 is an abundant number, since it is smaller than the sum of its proper divisors (3686075387640).

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

1266790701960 is a wasteful number, since it uses less digits than its factorization.

1266790701960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26457660 (or 26457653 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 1266790701960 in words is "one trillion, two hundred sixty-six billion, seven hundred ninety million, seven hundred one thousand, nine hundred sixty".