64493487363 has 4 divisors (see below), whose sum is σ = 85991316488. Its totient is φ = 42995658240.

The previous prime is 64493487347. The next prime is 64493487413. The reversal of 64493487363 is 36378439446.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64493487363 - 2⁴ = 64493487347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64493487763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10748914558 + ... + 10748914563.

It is an arithmetic number, because the mean of its divisors is an integer number (21497829122).

Almost surely, 2^64493487363 is an apocalyptic number.

64493487363 is a deficient number, since it is larger than the sum of its proper divisors (21497829125).

64493487363 is a wasteful number, since it uses less digits than its factorization.

64493487363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21497829124.

The product of its digits is 31352832, while the sum is 57.

The spelling of 64493487363 in words is "sixty-four billion, four hundred ninety-three million, four hundred eighty-seven thousand, three hundred sixty-three".