266775000540 has 192 divisors, whose sum is σ = 770506007040. Its totient is φ = 68927523840.

The previous prime is 266775000529. The next prime is 266775000617. The reversal of 266775000540 is 45000577662.

It is a junction number, because it is equal to n+sod(n) for n = 266775000492 and 266775000501.

It is a congruent number.

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, 249555126 + ... + 249556194.

It is an arithmetic number, because the mean of its divisors is an integer number (4013052120).

Almost surely, 2^266775000540 is an apocalyptic number.

266775000540 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 266775000540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385253003520).

266775000540 is an abundant number, since it is smaller than the sum of its proper divisors (503731006500).

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

266775000540 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (266775000539) it forms an eRAP, since the sums of their prime factors are consecutive (1811 and 1812).

266775000540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 266775000540 in words is "two hundred sixty-six billion, seven hundred seventy-five million, five hundred forty", and thus it is an aban number.