640165130301 has 4 divisors (see below), whose sum is σ = 853553507072. Its totient is φ = 426776753532.

The previous prime is 640165130287. The next prime is 640165130303. The reversal of 640165130301 is 103031561046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 640165130301 - 2⁶ = 640165130237 is a prime.

It is a super-2 number, since 2×640165130301² (a number of 24 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 (640165130303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106694188381 + ... + 106694188386.

It is an arithmetic number, because the mean of its divisors is an integer number (213388376768).

Almost surely, 2^640165130301 is an apocalyptic number.

It is an amenable number.

640165130301 is a deficient number, since it is larger than the sum of its proper divisors (213388376771).

640165130301 is a wasteful number, since it uses less digits than its factorization.

640165130301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213388376770.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 640165130301 its reverse (103031561046), we get a palindrome (743196691347).

The spelling of 640165130301 in words is "six hundred forty billion, one hundred sixty-five million, one hundred thirty thousand, three hundred one".