2661254513 has 16 divisors (see below), whose sum is σ = 2901868800. Its totient is φ = 2433827088.

The previous prime is 2661254501. The next prime is 2661254543. The reversal of 2661254513 is 3154521662.

It is not a de Polignac number, because 2661254513 - 2¹⁶ = 2661188977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661254543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 460520 + ... + 466262.

It is an arithmetic number, because the mean of its divisors is an integer number (181366800).

Almost surely, 2^2661254513 is an apocalyptic number.

It is an amenable number.

2661254513 is a deficient number, since it is larger than the sum of its proper divisors (240614287).

2661254513 is an frugal number, since it uses more digits than its factorization.

2661254513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5849 (or 5791 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 2661254513 is about 51587.3483811680. The cubic root of 2661254513 is about 1385.7837688711.

The spelling of 2661254513 in words is "two billion, six hundred sixty-one million, two hundred fifty-four thousand, five hundred thirteen".