275003079966 has 64 divisors (see below), whose sum is σ = 643595884800. Its totient is φ = 86800711968.

The previous prime is 275003079961. The next prime is 275003079977. The reversal of 275003079966 is 669970300572.

275003079966 is a `hidden beast` number, since 2 + 7 + 500 + 3 + 0 + 79 + 9 + 66 = 666.

It is a super-2 number, since 2×275003079966² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275003079961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2072820 + ... + 2201496.

It is an arithmetic number, because the mean of its divisors is an integer number (10056185700).

Almost surely, 2^275003079966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 275003079966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321797942400).

275003079966 is an abundant number, since it is smaller than the sum of its proper divisors (368592804834).

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

275003079966 is a wasteful number, since it uses less digits than its factorization.

275003079966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130790 (or 130784 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 54.

The spelling of 275003079966 in words is "two hundred seventy-five billion, three million, seventy-nine thousand, nine hundred sixty-six".