266429626361472 has 1024 divisors, whose sum is σ = 859212748800000. Its totient is φ = 71599426928640.

The previous prime is 266429626361447. The next prime is 266429626361519. The reversal of 266429626361472 is 274163626924662.

It is a happy number.

It is a super-2 number, since 2×266429626361472² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 1788118297654 + ... + 1788118297802.

It is an arithmetic number, because the mean of its divisors is an integer number (839074950000).

Almost surely, 2^{266429626361472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266429626361472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429606374400000).

266429626361472 is an abundant number, since it is smaller than the sum of its proper divisors (592783122438528).

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

266429626361472 is an frugal number, since it uses more digits than its factorization.

266429626361472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 340 counting only the distinct ones).

The product of its digits is 376233984, while the sum is 66.

The spelling of 266429626361472 in words is "two hundred sixty-six trillion, four hundred twenty-nine billion, six hundred twenty-six million, three hundred sixty-one thousand, four hundred seventy-two".