640130654011 has 8 divisors (see below), whose sum is σ = 640731678048. Its totient is φ = 639529800000.

The previous prime is 640130653997. The next prime is 640130654123. The reversal of 640130654011 is 110456031046.

640130654011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 640130654011 - 2²⁹ = 639593783099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640130654411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8236986 + ... + 8314336.

It is an arithmetic number, because the mean of its divisors is an integer number (80091459756).

Almost surely, 2^640130654011 is an apocalyptic number.

640130654011 is a deficient number, since it is larger than the sum of its proper divisors (601024037).

640130654011 is a wasteful number, since it uses less digits than its factorization.

640130654011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85013.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 640130654011 its reverse (110456031046), we get a palindrome (750586685057).

The spelling of 640130654011 in words is "six hundred forty billion, one hundred thirty million, six hundred fifty-four thousand, eleven".