6450043861 has 8 divisors (see below), whose sum is σ = 6664269824. Its totient is φ = 6236202960.

The previous prime is 6450043841. The next prime is 6450043891. The reversal of 6450043861 is 1683400546.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6450043861 - 2⁹ = 6450043349 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 6450043861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6450043811) 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, 62010 + ... + 129403.

It is an arithmetic number, because the mean of its divisors is an integer number (833033728).

Almost surely, 2^6450043861 is an apocalyptic number.

It is an amenable number.

6450043861 is a deficient number, since it is larger than the sum of its proper divisors (214225963).

6450043861 is a wasteful number, since it uses less digits than its factorization.

6450043861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192531.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 6450043861 is about 80312.1650872394. The cubic root of 6450043861 is about 1861.4622044552.

The spelling of 6450043861 in words is "six billion, four hundred fifty million, forty-three thousand, eight hundred sixty-one".