275666212061 has 8 divisors (see below), whose sum is σ = 296829023040. Its totient is φ = 255053084608.

The previous prime is 275666212049. The next prime is 275666212067. The reversal of 275666212061 is 160212666572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-275666212061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275666212067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137419841 + ... + 137421846.

It is an arithmetic number, because the mean of its divisors is an integer number (37103627880).

Almost surely, 2^275666212061 is an apocalyptic number.

It is an amenable number.

275666212061 is a deficient number, since it is larger than the sum of its proper divisors (21162810979).

275666212061 is a wasteful number, since it uses less digits than its factorization.

275666212061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274841763.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 275666212061 in words is "two hundred seventy-five billion, six hundred sixty-six million, two hundred twelve thousand, sixty-one".