266992053376 has 64 divisors (see below), whose sum is σ = 539729654400. Its totient is φ = 131532871680.

The previous prime is 266992053337. The next prime is 266992053401. The reversal of 266992053376 is 673350299662.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 266992053376.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15922885 + ... + 15939643.

It is an arithmetic number, because the mean of its divisors is an integer number (8433275850).

Almost surely, 2^266992053376 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 266992053376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269864827200).

266992053376 is an abundant number, since it is smaller than the sum of its proper divisors (272737601024).

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

266992053376 is a wasteful number, since it uses less digits than its factorization.

266992053376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18597 (or 18585 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 58.

The spelling of 266992053376 in words is "two hundred sixty-six billion, nine hundred ninety-two million, fifty-three thousand, three hundred seventy-six".