63842401111 has 4 divisors (see below), whose sum is σ = 64462230352. Its totient is φ = 63222571872.

The previous prime is 63842401097. The next prime is 63842401121. The reversal of 63842401111 is 11110424836.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63842401111 - 2¹³ = 63842392919 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 (63842401121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 309914466 + ... + 309914671.

It is an arithmetic number, because the mean of its divisors is an integer number (16115557588).

Almost surely, 2^63842401111 is an apocalyptic number.

63842401111 is a deficient number, since it is larger than the sum of its proper divisors (619829241).

63842401111 is a wasteful number, since it uses less digits than its factorization.

63842401111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619829240.

The product of its (nonzero) digits is 4608, while the sum is 31.

Adding to 63842401111 its reverse (11110424836), we get a palindrome (74952825947).

The spelling of 63842401111 in words is "sixty-three billion, eight hundred forty-two million, four hundred one thousand, one hundred eleven".