781141141111 has 8 divisors (see below), whose sum is σ = 782879852304. Its totient is φ = 779403031680.

The previous prime is 781141141087. The next prime is 781141141129. The reversal of 781141141111 is 111141141187.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-781141141111 is a prime.

It is a super-2 number, since 2×781141141111² (a number of 25 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 (781141111111) 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, 2500465 + ... + 2795461.

It is an arithmetic number, because the mean of its divisors is an integer number (97859981538).

Almost surely, 2^781141141111 is an apocalyptic number.

781141141111 is a deficient number, since it is larger than the sum of its proper divisors (1738711193).

781141141111 is a wasteful number, since it uses less digits than its factorization.

781141141111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300881.

The product of its digits is 896, while the sum is 31.

Adding to 781141141111 its reverse (111141141187), we get a palindrome (892282282298).

The spelling of 781141141111 in words is "seven hundred eighty-one billion, one hundred forty-one million, one hundred forty-one thousand, one hundred eleven".