646069431935 has 16 divisors (see below), whose sum is σ = 776568425472. Its totient is φ = 515999354400.

The previous prime is 646069431901. The next prime is 646069431941. The reversal of 646069431935 is 539134960646.

It is not a de Polignac number, because 646069431935 - 2³⁰ = 644995690111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9890030 + ... + 9955140.

It is an arithmetic number, because the mean of its divisors is an integer number (48535526592).

Almost surely, 2^646069431935 is an apocalyptic number.

646069431935 is a deficient number, since it is larger than the sum of its proper divisors (130498993537).

646069431935 is a wasteful number, since it uses less digits than its factorization.

646069431935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68374.

The product of its (nonzero) digits is 12597120, while the sum is 56.

The spelling of 646069431935 in words is "six hundred forty-six billion, sixty-nine million, four hundred thirty-one thousand, nine hundred thirty-five".