2513706641 has 4 divisors (see below), whose sum is σ = 2594793984. Its totient is φ = 2432619300.

The previous prime is 2513706617. The next prime is 2513706659. The reversal of 2513706641 is 1466073152.

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.

It is a cyclic number.

It is not a de Polignac number, because 2513706641 - 2⁶ = 2513706577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2513706941) 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, 40543625 + ... + 40543686.

It is an arithmetic number, because the mean of its divisors is an integer number (648698496).

Almost surely, 2^2513706641 is an apocalyptic number.

It is an amenable number.

2513706641 is a deficient number, since it is larger than the sum of its proper divisors (81087343).

2513706641 is an equidigital number, since it uses as much as digits as its factorization.

2513706641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81087342.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 2513706641 is about 50136.8790512533. The cubic root of 2513706641 is about 1359.6846589021.

Adding to 2513706641 its reverse (1466073152), we get a palindrome (3979779793).

The spelling of 2513706641 in words is "two billion, five hundred thirteen million, seven hundred six thousand, six hundred forty-one".