64363406443 has 24 divisors (see below), whose sum is σ = 75290342400. Its totient is φ = 54860737680.

The previous prime is 64363406431. The next prime is 64363406447. The reversal of 64363406443 is 34460436346.

It is not a de Polignac number, because 64363406443 - 2⁵ = 64363406411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64363406443.

It is not an unprimeable number, because it can be changed into a prime (64363406447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11918658 + ... + 11924056.

It is an arithmetic number, because the mean of its divisors is an integer number (3137097600).

Almost surely, 2^64363406443 is an apocalyptic number.

64363406443 is a deficient number, since it is larger than the sum of its proper divisors (10926935957).

64363406443 is a wasteful number, since it uses less digits than its factorization.

64363406443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6727 (or 6720 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 43.

The spelling of 64363406443 in words is "sixty-four billion, three hundred sixty-three million, four hundred six thousand, four hundred forty-three".