64152663646443 has 16 divisors (see below), whose sum is σ = 85904876936736. Its totient is φ = 42584450159360.

The previous prime is 64152663646441. The next prime is 64152663646447. The reversal of 64152663646443 is 34464636625146.

It is a cyclic number.

It is not a de Polignac number, because 64152663646443 - 2¹ = 64152663646441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64152663646441) 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, 76808053 + ... + 77638793.

It is an arithmetic number, because the mean of its divisors is an integer number (5369054808546).

Almost surely, 2^{64152663646443} is an apocalyptic number.

64152663646443 is a deficient number, since it is larger than the sum of its proper divisors (21752213290293).

64152663646443 is a wasteful number, since it uses less digits than its factorization.

64152663646443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941454.

The product of its digits is 179159040, while the sum is 60.

The spelling of 64152663646443 in words is "sixty-four trillion, one hundred fifty-two billion, six hundred sixty-three million, six hundred forty-six thousand, four hundred forty-three".