64188864830993 has 16 divisors (see below), whose sum is σ = 75230395620864. Its totient is φ = 53624971952640.

The previous prime is 64188864830963. The next prime is 64188864831031. The reversal of 64188864830993 is 39903846888146.

It is a cyclic number.

It is not a de Polignac number, because 64188864830993 - 2¹² = 64188864826897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64188864830933) 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, 404698580 + ... + 404857157.

It is an arithmetic number, because the mean of its divisors is an integer number (4701899726304).

Almost surely, 2^{64188864830993} is an apocalyptic number.

It is an amenable number.

64188864830993 is a deficient number, since it is larger than the sum of its proper divisors (11041530789871).

64188864830993 is a wasteful number, since it uses less digits than its factorization.

64188864830993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809556032.

The product of its (nonzero) digits is 1719926784, while the sum is 77.

The spelling of 64188864830993 in words is "sixty-four trillion, one hundred eighty-eight billion, eight hundred sixty-four million, eight hundred thirty thousand, nine hundred ninety-three".