2516246641 has 4 divisors (see below), whose sum is σ = 2518262500. Its totient is φ = 2514230784.

The previous prime is 2516246611. The next prime is 2516246659. The reversal of 2516246641 is 1466426152.

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 472845025 + 2043401616 = 21745^2 + 45204^2 .

It is a cyclic number.

It is not a de Polignac number, because 2516246641 - 2⁹ = 2516246129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2516246641.

It is not an unprimeable number, because it can be changed into a prime (2516246611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006056 + ... + 1008553.

It is an arithmetic number, because the mean of its divisors is an integer number (629565625).

Almost surely, 2^2516246641 is an apocalyptic number.

It is an amenable number.

2516246641 is a deficient number, since it is larger than the sum of its proper divisors (2015859).

2516246641 is a wasteful number, since it uses less digits than its factorization.

2516246641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015858.

The product of its digits is 69120, while the sum is 37.

The square root of 2516246641 is about 50162.2033108595. The cubic root of 2516246641 is about 1360.1424737201.

The spelling of 2516246641 in words is "two billion, five hundred sixteen million, two hundred forty-six thousand, six hundred forty-one".