646564541430 has 32 divisors (see below), whose sum is σ = 1552196368224. Its totient is φ = 172368158976.

The previous prime is 646564541417. The next prime is 646564541431. The reversal of 646564541430 is 34145465646.

It is a self number, because there is not a number n which added to its sum of digits gives 646564541430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646564541431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2958487 + ... + 3169506.

It is an arithmetic number, because the mean of its divisors is an integer number (48506136507).

Almost surely, 2^646564541430 is an apocalyptic number.

646564541430 is an abundant number, since it is smaller than the sum of its proper divisors (905631826794).

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

646564541430 is a wasteful number, since it uses less digits than its factorization.

646564541430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6131520.

The product of its (nonzero) digits is 4147200, while the sum is 48.

The spelling of 646564541430 in words is "six hundred forty-six billion, five hundred sixty-four million, five hundred forty-one thousand, four hundred thirty".