64489636358 has 8 divisors (see below), whose sum is σ = 110553662352. Its totient is φ = 27638415576.

The previous prime is 64489636339. The next prime is 64489636363. The reversal of 64489636358 is 85363698446.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 64489636358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2303201285 + ... + 2303201312.

It is an arithmetic number, because the mean of its divisors is an integer number (13819207794).

Almost surely, 2^64489636358 is an apocalyptic number.

64489636358 is a deficient number, since it is larger than the sum of its proper divisors (46064025994).

64489636358 is a wasteful number, since it uses less digits than its factorization.

64489636358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606402606.

The product of its digits is 89579520, while the sum is 62.

The spelling of 64489636358 in words is "sixty-four billion, four hundred eighty-nine million, six hundred thirty-six thousand, three hundred fifty-eight".