66277266000 has 240 divisors, whose sum is σ = 234871675584. Its totient is φ = 16067040000.

The previous prime is 66277265993. The next prime is 66277266001. The reversal of 66277266000 is 66277266.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66277266001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 680355 + ... + 771645.

Almost surely, 2^66277266000 is an apocalyptic number.

66277266000 is a gapful number since it is divisible by the number (60) 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 66277266000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117435837792).

66277266000 is an abundant number, since it is smaller than the sum of its proper divisors (168594409584).

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

66277266000 is a wasteful number, since it uses less digits than its factorization.

66277266000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91339 (or 91312 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 42.

66277266000 divided by its reverse (66277266) gives a cube (1000 = 10³).

The spelling of 66277266000 in words is "sixty-six billion, two hundred seventy-seven million, two hundred sixty-six thousand".