640540226302301 has 8 divisors (see below), whose sum is σ = 689863698069504. Its totient is φ = 591224061201840.

The previous prime is 640540226302259. The next prime is 640540226302313. The reversal of 640540226302301 is 103203622045046.

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 640540226302301 - 2³⁸ = 640265348395357 is a prime.

It is a super-2 number, since 2×640540226302301² (a number of 30 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 (640540226302351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1826484605 + ... + 1826835266.

It is an arithmetic number, because the mean of its divisors is an integer number (86232962258688).

Almost surely, 2^{640540226302301} is an apocalyptic number.

It is an amenable number.

640540226302301 is a deficient number, since it is larger than the sum of its proper divisors (49323471767203).

640540226302301 is a wasteful number, since it uses less digits than its factorization.

640540226302301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653333371.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 640540226302301 its reverse (103203622045046), we get a palindrome (743743848347347).

The spelling of 640540226302301 in words is "six hundred forty trillion, five hundred forty billion, two hundred twenty-six million, three hundred two thousand, three hundred one".