1266899055168 has 112 divisors (see below), whose sum is σ = 3520908758016. Its totient is φ = 401263526400.

The previous prime is 1266899055157. The next prime is 1266899055173. The reversal of 1266899055168 is 8615509986621.

It is a super-2 number, since 2×1266899055168² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1266899055099 and 1266899055108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283146 + ... + 1616777.

Almost surely, 2^{1266899055168} is an apocalyptic number.

It is an amenable number.

1266899055168 is an abundant number, since it is smaller than the sum of its proper divisors (2254009702848).

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

1266899055168 is a wasteful number, since it uses less digits than its factorization.

1266899055168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1900112 (or 1900102 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 66.

The spelling of 1266899055168 in words is "one trillion, two hundred sixty-six billion, eight hundred ninety-nine million, fifty-five thousand, one hundred sixty-eight".