2673720545 has 4 divisors (see below), whose sum is σ = 3208464660. Its totient is φ = 2138976432.

The previous prime is 2673720481. The next prime is 2673720551. The reversal of 2673720545 is 5450273762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1509477904 + 1164242641 = 38852^2 + 34121^2 .

It is a cyclic number.

It is not a de Polignac number, because 2673720545 - 2⁶ = 2673720481 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267372050 + ... + 267372059.

It is an arithmetic number, because the mean of its divisors is an integer number (802116165).

Almost surely, 2^2673720545 is an apocalyptic number.

It is an amenable number.

2673720545 is a deficient number, since it is larger than the sum of its proper divisors (534744115).

2673720545 is an equidigital number, since it uses as much as digits as its factorization.

2673720545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534744114.

The product of its (nonzero) digits is 352800, while the sum is 41.

The square root of 2673720545 is about 51708.0317262222. The cubic root of 2673720545 is about 1387.9441936843.

The spelling of 2673720545 in words is "two billion, six hundred seventy-three million, seven hundred twenty thousand, five hundred forty-five".