266949457123968 has 96 divisors (see below), whose sum is σ = 768905772616800. Its totient is φ = 88898486745600.

The previous prime is 266949457123961. The next prime is 266949457124059. The reversal of 266949457123968 is 869321754949662.

266949457123968 is a `hidden beast` number, since 2 + 6 + 6 + 9 + 4 + 9 + 4 + 571 + 2 + 39 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×266949457123968² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (266949457123961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 109030428 + ... + 111451931.

It is an arithmetic number, because the mean of its divisors is an integer number (8009435131425).

Almost surely, 2^{266949457123968} is an apocalyptic number.

It is an amenable number.

266949457123968 is an abundant number, since it is smaller than the sum of its proper divisors (501956315492832).

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

266949457123968 is a wasteful number, since it uses less digits than its factorization.

266949457123968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220483430 (or 220483415 counting only the distinct ones).

The product of its digits is 8465264640, while the sum is 81.

The spelling of 266949457123968 in words is "two hundred sixty-six trillion, nine hundred forty-nine billion, four hundred fifty-seven million, one hundred twenty-three thousand, nine hundred sixty-eight".