646461709359 has 8 divisors (see below), whose sum is σ = 861956519472. Its totient is φ = 430970686080.

The previous prime is 646461709357. The next prime is 646461709381. The reversal of 646461709359 is 953907164646.

It is a happy number.

646461709359 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 646461709359 - 2¹ = 646461709357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646461709357) 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, 521034 + ... + 1250759.

It is an arithmetic number, because the mean of its divisors is an integer number (107744564934).

Almost surely, 2^646461709359 is an apocalyptic number.

646461709359 is a deficient number, since it is larger than the sum of its proper divisors (215494810113).

646461709359 is a wasteful number, since it uses less digits than its factorization.

646461709359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893417.

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 646461709359 in words is "six hundred forty-six billion, four hundred sixty-one million, seven hundred nine thousand, three hundred fifty-nine".