266606078508000 has 2304 divisors, whose sum is σ = 1265545062512640. Its totient is φ = 53487931392000.

The previous prime is 266606078507987. The next prime is 266606078508019. The reversal of 266606078508000 is 805870606662.

266606078508000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2170414584 + ... + 2170537416.

It is an arithmetic number, because the mean of its divisors is an integer number (549281711160).

Almost surely, 2^{266606078508000} is an apocalyptic number.

266606078508000 is a gapful number since it is divisible by the number (20) 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 266606078508000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632772531256320).

266606078508000 is an abundant number, since it is smaller than the sum of its proper divisors (998938984004640).

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

266606078508000 is a wasteful number, since it uses less digits than its factorization.

266606078508000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122920 (or 122890 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 266606078508000 in words is "two hundred sixty-six trillion, six hundred six billion, seventy-eight million, five hundred eight thousand".