6456515723 has 16 divisors (see below), whose sum is σ = 7925760000. Its totient is φ = 5242879656.

The previous prime is 6456515719. The next prime is 6456515743. The reversal of 6456515723 is 3275156546.

It is a happy number.

It is not a de Polignac number, because 6456515723 - 2² = 6456515719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6456515743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488843 + ... + 501876.

It is an arithmetic number, because the mean of its divisors is an integer number (495360000).

Almost surely, 2^6456515723 is an apocalyptic number.

6456515723 is a deficient number, since it is larger than the sum of its proper divisors (1469244277).

6456515723 is an equidigital number, since it uses as much as digits as its factorization.

6456515723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990759 (or 990745 counting only the distinct ones).

The product of its digits is 756000, while the sum is 44.

The square root of 6456515723 is about 80352.4469011367. The cubic root of 6456515723 is about 1862.0845826239.

The spelling of 6456515723 in words is "six billion, four hundred fifty-six million, five hundred fifteen thousand, seven hundred twenty-three".