456721664899 has 8 divisors (see below), whose sum is σ = 465564609360. Its totient is φ = 447948625536.

The previous prime is 456721664849. The next prime is 456721664909. The reversal of 456721664899 is 998466127654.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 456721664899 - 2⁷ = 456721664771 is a prime.

It is a super-2 number, since 2×456721664899² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (456721664849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17463082 + ... + 17489215.

It is an arithmetic number, because the mean of its divisors is an integer number (58195576170).

Almost surely, 2^456721664899 is an apocalyptic number.

456721664899 is a deficient number, since it is larger than the sum of its proper divisors (8842944461).

456721664899 is a wasteful number, since it uses less digits than its factorization.

456721664899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34952549.

The product of its digits is 156764160, while the sum is 67.

The spelling of 456721664899 in words is "four hundred fifty-six billion, seven hundred twenty-one million, six hundred sixty-four thousand, eight hundred ninety-nine".