646010291407 has 48 divisors (see below), whose sum is σ = 766247644800. Its totient is φ = 542434838400.

The previous prime is 646010291387. The next prime is 646010291441. The reversal of 646010291407 is 704192010646.

It is not a de Polignac number, because 646010291407 - 2¹¹ = 646010289359 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 646010291407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646010291497) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8106657 + ... + 8185957.

It is an arithmetic number, because the mean of its divisors is an integer number (15963492600).

Almost surely, 2^646010291407 is an apocalyptic number.

646010291407 is a deficient number, since it is larger than the sum of its proper divisors (120237353393).

646010291407 is a wasteful number, since it uses less digits than its factorization.

646010291407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79448 (or 79435 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 646010291407 in words is "six hundred forty-six billion, ten million, two hundred ninety-one thousand, four hundred seven".