266679986031360 has 720 divisors, whose sum is σ = 1074557992983552. Its totient is φ = 62564211302400.

The previous prime is 266679986031353. The next prime is 266679986031409. The reversal of 266679986031360 is 63130689976662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (720).

It is a super-3 number, since 3×266679986031360³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 31583407 + ... + 39126353.

Almost surely, 2^{266679986031360} is an apocalyptic number.

266679986031360 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 266679986031360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (537278996491776).

266679986031360 is an abundant number, since it is smaller than the sum of its proper divisors (807878006952192).

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

266679986031360 is a wasteful number, since it uses less digits than its factorization.

266679986031360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7543022 (or 7542999 counting only the distinct ones).

The product of its (nonzero) digits is 634894848, while the sum is 72.

The spelling of 266679986031360 in words is "two hundred sixty-six trillion, six hundred seventy-nine billion, nine hundred eighty-six million, thirty-one thousand, three hundred sixty".