646662615036630 has 16 divisors (see below), whose sum is σ = 1551990276087984. Its totient is φ = 172443364009760.

The previous prime is 646662615036629. The next prime is 646662615036637. The reversal of 646662615036630 is 36630516266646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646662615036637) 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, 10777710250581 + ... + 10777710250640.

It is an arithmetic number, because the mean of its divisors is an integer number (96999392255499).

Almost surely, 2^{646662615036630} is an apocalyptic number.

646662615036630 is an abundant number, since it is smaller than the sum of its proper divisors (905327661051354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646662615036630 is a wasteful number, since it uses less digits than its factorization.

646662615036630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21555420501231.

The product of its (nonzero) digits is 100776960, while the sum is 60.

The spelling of 646662615036630 in words is "six hundred forty-six trillion, six hundred sixty-two billion, six hundred fifteen million, thirty-six thousand, six hundred thirty".