266961972490752 has 480 divisors, whose sum is σ = 917558959718016. Its totient is φ = 67466684989440.

The previous prime is 266961972490751. The next prime is 266961972490753. The reversal of 266961972490752 is 257094279169662.

It is an interprime number because it is at equal distance from previous prime (266961972490751) and next prime (266961972490753).

It is not an unprimeable number, because it can be changed into a prime (266961972490751) 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 47 ways as a sum of consecutive naturals, for example, 45363748 + ... + 50909660.

Almost surely, 2^{266961972490752} is an apocalyptic number.

266961972490752 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266961972490752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (458779479859008).

266961972490752 is an abundant number, since it is smaller than the sum of its proper divisors (650596987227264).

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

266961972490752 is a wasteful number, since it uses less digits than its factorization.

266961972490752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546000 (or 5545973 counting only the distinct ones).

The product of its (nonzero) digits is 1234517760, while the sum is 75.

The spelling of 266961972490752 in words is "two hundred sixty-six trillion, nine hundred sixty-one billion, nine hundred seventy-two million, four hundred ninety thousand, seven hundred fifty-two".