642237263311 has 8 divisors (see below), whose sum is σ = 733990325024. Its totient is φ = 550485421920.

The previous prime is 642237263293. The next prime is 642237263323. The reversal of 642237263311 is 113362732246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 642237263311 - 2¹³ = 642237255119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642237263611) 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, 1710121 + ... + 2051581.

It is an arithmetic number, because the mean of its divisors is an integer number (91748790628).

Almost surely, 2^642237263311 is an apocalyptic number.

642237263311 is a deficient number, since it is larger than the sum of its proper divisors (91753061713).

642237263311 is a wasteful number, since it uses less digits than its factorization.

642237263311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610161.

The product of its digits is 217728, while the sum is 40.

Adding to 642237263311 its reverse (113362732246), we get a palindrome (755599995557).

The spelling of 642237263311 in words is "six hundred forty-two billion, two hundred thirty-seven million, two hundred sixty-three thousand, three hundred eleven".