266720912876160 has 768 divisors, whose sum is σ = 963262070784000. Its totient is φ = 67924882022400.

The previous prime is 266720912876017. The next prime is 266720912876213. The reversal of 266720912876160 is 61678219027662.

266720912876160 is a `hidden beast` number, since 2 + 6 + 6 + 7 + 2 + 0 + 9 + 1 + 2 + 8 + 7 + 616 + 0 = 666.

It is a super-2 number, since 2×266720912876160² (a number of 30 digits) contains 22 as substring.

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, 37677763501 + ... + 37677770579.

It is an arithmetic number, because the mean of its divisors is an integer number (1254247488000).

Almost surely, 2^{266720912876160} is an apocalyptic number.

266720912876160 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 266720912876160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (481631035392000).

266720912876160 is an abundant number, since it is smaller than the sum of its proper divisors (696541157907840).

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

266720912876160 is a wasteful number, since it uses less digits than its factorization.

266720912876160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9885 (or 9870 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 266720912876160 in words is "two hundred sixty-six trillion, seven hundred twenty billion, nine hundred twelve million, eight hundred seventy-six thousand, one hundred sixty".