640241058511 has 8 divisors (see below), whose sum is σ = 646381755360. Its totient is φ = 634105215072.

The previous prime is 640241058497. The next prime is 640241058533. The reversal of 640241058511 is 115850142046.

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 640241058511 - 2³⁹ = 90485244623 is a prime.

It is a super-2 number, since 2×640241058511² (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 (640241058011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947980 + ... + 1476193.

It is an arithmetic number, because the mean of its divisors is an integer number (80797719420).

Almost surely, 2^640241058511 is an apocalyptic number.

640241058511 is a deficient number, since it is larger than the sum of its proper divisors (6140696849).

640241058511 is a wasteful number, since it uses less digits than its factorization.

640241058511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426705.

The product of its (nonzero) digits is 38400, while the sum is 37.

The spelling of 640241058511 in words is "six hundred forty billion, two hundred forty-one million, fifty-eight thousand, five hundred eleven".