4456661515 has 4 divisors (see below), whose sum is σ = 5347993824. Its totient is φ = 3565329208.

The previous prime is 4456661497. The next prime is 4456661519. The reversal of 4456661515 is 5151666544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4456661515 - 2¹⁹ = 4456137227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4456661519) 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, 445666147 + ... + 445666156.

It is an arithmetic number, because the mean of its divisors is an integer number (1336998456).

Almost surely, 2^4456661515 is an apocalyptic number.

4456661515 is a deficient number, since it is larger than the sum of its proper divisors (891332309).

4456661515 is an equidigital number, since it uses as much as digits as its factorization.

4456661515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891332308.

The product of its digits is 432000, while the sum is 43.

The square root of 4456661515 is about 66758.2318145111. The cubic root of 4456661515 is about 1645.6464989659.

The spelling of 4456661515 in words is "four billion, four hundred fifty-six million, six hundred sixty-one thousand, five hundred fifteen".