2673518521 has 4 divisors (see below), whose sum is σ = 2673662032. Its totient is φ = 2673375012.

The previous prime is 2673518513. The next prime is 2673518527. The reversal of 2673518521 is 1258153762.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1258153762 = 2 ⋅629076881.

It is a cyclic number.

It is not a de Polignac number, because 2673518521 - 2³ = 2673518513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2673518527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38751 + ... + 82756.

It is an arithmetic number, because the mean of its divisors is an integer number (668415508).

Almost surely, 2^2673518521 is an apocalyptic number.

It is an amenable number.

2673518521 is a deficient number, since it is larger than the sum of its proper divisors (143511).

2673518521 is a wasteful number, since it uses less digits than its factorization.

2673518521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143510.

The product of its digits is 100800, while the sum is 40.

The square root of 2673518521 is about 51706.0781823569. The cubic root of 2673518521 is about 1387.9092355183.

The spelling of 2673518521 in words is "two billion, six hundred seventy-three million, five hundred eighteen thousand, five hundred twenty-one".