64205483687 has 32 divisors (see below), whose sum is σ = 70491617280. Its totient is φ = 58306420480.

The previous prime is 64205483647. The next prime is 64205483689. The reversal of 64205483687 is 78638450246.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-64205483687 is a prime.

It is a super-2 number, since 2×64205483687² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64205483689) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7929413 + ... + 7937505.

It is an arithmetic number, because the mean of its divisors is an integer number (2202863040).

Almost surely, 2^64205483687 is an apocalyptic number.

64205483687 is a deficient number, since it is larger than the sum of its proper divisors (6286133593).

64205483687 is a wasteful number, since it uses less digits than its factorization.

64205483687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8383.

The product of its (nonzero) digits is 7741440, while the sum is 53.

The spelling of 64205483687 in words is "sixty-four billion, two hundred five million, four hundred eighty-three thousand, six hundred eighty-seven".