646012646300 has 72 divisors (see below), whose sum is σ = 1696353238944. Its totient is φ = 208461219840.

The previous prime is 646012646299. The next prime is 646012646327. The reversal of 646012646300 is 3646210646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27131489 + ... + 27155288.

It is an arithmetic number, because the mean of its divisors is an integer number (23560461652).

Almost surely, 2^646012646300 is an apocalyptic number.

It is an amenable number.

646012646300 is an abundant number, since it is smaller than the sum of its proper divisors (1050340592644).

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

646012646300 is a wasteful number, since it uses less digits than its factorization.

646012646300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54286815 (or 54286808 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

Adding to 646012646300 its reverse (3646210646), we get a palindrome (649658856946).

The spelling of 646012646300 in words is "six hundred forty-six billion, twelve million, six hundred forty-six thousand, three hundred".