646515462516433 has 8 divisors (see below), whose sum is σ = 646753891060800. Its totient is φ = 646277040421968.

The previous prime is 646515462516419. The next prime is 646515462516499. The reversal of 646515462516433 is 334615264515646.

It is a happy number.

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 646515462516433 - 2²⁹ = 646514925645521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (646515468516433) 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, 203713383 + ... + 206862691.

It is an arithmetic number, because the mean of its divisors is an integer number (80844236382600).

Almost surely, 2^{646515462516433} is an apocalyptic number.

It is an amenable number.

646515462516433 is a deficient number, since it is larger than the sum of its proper divisors (238428544367).

646515462516433 is a wasteful number, since it uses less digits than its factorization.

646515462516433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224951.

The product of its digits is 186624000, while the sum is 61.

The spelling of 646515462516433 in words is "six hundred forty-six trillion, five hundred fifteen billion, four hundred sixty-two million, five hundred sixteen thousand, four hundred thirty-three".