646443436150 has 12 divisors (see below), whose sum is σ = 1202384791332. Its totient is φ = 258577374440.

The previous prime is 646443436147. The next prime is 646443436259. The reversal of 646443436150 is 51634344646.

It is a super-2 number, since 2×646443436150² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 646443436150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6464434312 + ... + 6464434411.

It is an arithmetic number, because the mean of its divisors is an integer number (100198732611).

Almost surely, 2^646443436150 is an apocalyptic number.

646443436150 is a deficient number, since it is larger than the sum of its proper divisors (555941355182).

646443436150 is a wasteful number, since it uses less digits than its factorization.

646443436150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12928868735 (or 12928868730 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 46.

The spelling of 646443436150 in words is "six hundred forty-six billion, four hundred forty-three million, four hundred thirty-six thousand, one hundred fifty".