640232050211 has 8 divisors (see below), whose sum is σ = 711721981824. Its totient is φ = 571919448960.

The previous prime is 640232050201. The next prime is 640232050223. The reversal of 640232050211 is 112050232046.

It is a happy number.

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 640232050211 - 2³⁴ = 623052181027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (640232050201) 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, 794332166 + ... + 794332971.

It is an arithmetic number, because the mean of its divisors is an integer number (88965247728).

Almost surely, 2^640232050211 is an apocalyptic number.

640232050211 is a deficient number, since it is larger than the sum of its proper divisors (71489931613).

640232050211 is a wasteful number, since it uses less digits than its factorization.

640232050211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588665181.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 640232050211 its reverse (112050232046), we get a palindrome (752282282257).

The spelling of 640232050211 in words is "six hundred forty billion, two hundred thirty-two million, fifty thousand, two hundred eleven".