2440516621 has 2 divisors, whose sum is σ = 2440516622. Its totient is φ = 2440516620.

The previous prime is 2440516613. The next prime is 2440516627. The reversal of 2440516621 is 1266150442.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1545669225 + 894847396 = 39315^2 + 29914^2 .

It is a cyclic number.

It is not a de Polignac number, because 2440516621 - 2³ = 2440516613 is a prime.

It is a super-2 number, since 2×2440516621² = 11912242754754515282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2440516627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1220258310 + 1220258311.

It is an arithmetic number, because the mean of its divisors is an integer number (1220258311).

Almost surely, 2^2440516621 is an apocalyptic number.

It is an amenable number.

2440516621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2440516621 is an equidigital number, since it uses as much as digits as its factorization.

2440516621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2440516621 is about 49401.5852073595. The cubic root of 2440516621 is about 1346.3581074733.

The spelling of 2440516621 in words is "two billion, four hundred forty million, five hundred sixteen thousand, six hundred twenty-one".