266947751460 has 192 divisors, whose sum is σ = 813260448000. Its totient is φ = 65033238528.

The previous prime is 266947751437. The next prime is 266947751507. The reversal of 266947751460 is 64157749662.

It is a super-2 number, since 2×266947751460² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266947751460.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 131694967 + ... + 131696993.

It is an arithmetic number, because the mean of its divisors is an integer number (4235731500).

Almost surely, 2^266947751460 is an apocalyptic number.

266947751460 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 266947751460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406630224000).

266947751460 is an abundant number, since it is smaller than the sum of its proper divisors (546312696540).

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

266947751460 is a wasteful number, since it uses less digits than its factorization.

266947751460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710 (or 3708 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 266947751460 in words is "two hundred sixty-six billion, nine hundred forty-seven million, seven hundred fifty-one thousand, four hundred sixty".