64188661008743 has 8 divisors (see below), whose sum is σ = 64202503843008. Its totient is φ = 64174818836224.

The previous prime is 64188661008739. The next prime is 64188661008757. The reversal of 64188661008743 is 34780016688146.

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 64188661008743 - 2² = 64188661008739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64188661008943) 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, 226903955 + ... + 227186667.

It is an arithmetic number, because the mean of its divisors is an integer number (8025312980376).

Almost surely, 2^{64188661008743} is an apocalyptic number.

64188661008743 is a deficient number, since it is larger than the sum of its proper divisors (13842834265).

64188661008743 is a wasteful number, since it uses less digits than its factorization.

64188661008743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330873.

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 64188661008743 in words is "sixty-four trillion, one hundred eighty-eight billion, six hundred sixty-one million, eight thousand, seven hundred forty-three".