2075273617561 has 3 divisors (see below), whose sum is σ = 2075275058143. Its totient is φ = 2075272176980.

The previous prime is 2075273617553. The next prime is 2075273617603. The reversal of 2075273617561 is 1657163725702.

The square root of 2075273617561 is 1440581.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 354716727561 + 1720556890000 = 595581^2 + 1311700^2 .

It is not a de Polignac number, because 2075273617561 - 2³ = 2075273617553 is a prime.

It is a super-3 number, since 3×2075273617561³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2075273617499 and 2075273617508.

It is not an unprimeable number, because it can be changed into a prime (2075273617511) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 720291 + ... + 2160871.

Almost surely, 2^{2075273617561} is an apocalyptic number.

2075273617561 is the 1440581-st square number.

2075273617561 is the 720291-st centered octagonal number.

It is an amenable number.

2075273617561 is a deficient number, since it is larger than the sum of its proper divisors (1440582).

2075273617561 is an frugal number, since it uses more digits than its factorization.

2075273617561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2881162 (or 1440581 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 2075273617561 in words is "two trillion, seventy-five billion, two hundred seventy-three million, six hundred seventeen thousand, five hundred sixty-one".