266007534660 has 288 divisors, whose sum is σ = 943936680960. Its totient is φ = 59371812864.

The previous prime is 266007534647. The next prime is 266007534703. The reversal of 266007534660 is 66435700662.

266007534660 is a `hidden beast` number, since 2 + 6 + 600 + 7 + 5 + 34 + 6 + 6 + 0 = 666.

It is a super-2 number, since 2×266007534660² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 27058626 + ... + 27068454.

It is an arithmetic number, because the mean of its divisors is an integer number (3277557920).

Almost surely, 2^266007534660 is an apocalyptic number.

266007534660 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 266007534660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (471968340480).

266007534660 is an abundant number, since it is smaller than the sum of its proper divisors (677929146300).

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

266007534660 is a wasteful number, since it uses less digits than its factorization.

266007534660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10355 (or 10350 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 266007534660 in words is "two hundred sixty-six billion, seven million, five hundred thirty-four thousand, six hundred sixty".