2516236465 has 4 divisors (see below), whose sum is σ = 3019483764. Its totient is φ = 2012989168.

The previous prime is 2516236381. The next prime is 2516236469. The reversal of 2516236465 is 5646326152.

It is a happy number.

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 1857954816 + 658281649 = 43104^2 + 25657^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2516236465 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2516236469) 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, 251623642 + ... + 251623651.

It is an arithmetic number, because the mean of its divisors is an integer number (754870941).

Almost surely, 2^2516236465 is an apocalyptic number.

It is an amenable number.

2516236465 is a deficient number, since it is larger than the sum of its proper divisors (503247299).

2516236465 is an equidigital number, since it uses as much as digits as its factorization.

2516236465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503247298.

The product of its digits is 259200, while the sum is 40.

The square root of 2516236465 is about 50162.1018798056. The cubic root of 2516236465 is about 1360.1406401918.

The spelling of 2516236465 in words is "two billion, five hundred sixteen million, two hundred thirty-six thousand, four hundred sixty-five".