275573066661 has 6 divisors (see below), whose sum is σ = 398049985190. Its totient is φ = 183715377768.

The previous prime is 275573066627. The next prime is 275573066687. The reversal of 275573066661 is 166660375572.

It can be written as a sum of positive squares in only one way, i.e., 275011092225 + 561974436 = 524415^2 + 23706^2 .

It is not a de Polignac number, because 275573066661 - 2¹⁵ = 275573033893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 275573066598 and 275573066607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275573061661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15309614806 + ... + 15309614823.

Almost surely, 2^275573066661 is an apocalyptic number.

It is an amenable number.

275573066661 is a deficient number, since it is larger than the sum of its proper divisors (122476918529).

275573066661 is a wasteful number, since it uses less digits than its factorization.

275573066661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30619229635 (or 30619229632 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 54.

The spelling of 275573066661 in words is "two hundred seventy-five billion, five hundred seventy-three million, sixty-six thousand, six hundred sixty-one".