83501111111 has 16 divisors (see below), whose sum is σ = 94387174560. Its totient is φ = 73172776320.

The previous prime is 83501111107. The next prime is 83501111123. The reversal of 83501111111 is 11111110538.

It is a cyclic number.

It is not a de Polignac number, because 83501111111 - 2² = 83501111107 is a prime.

It is a Duffinian number.

83501111111 is a modest number, since divided by 111111 gives 83501 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83501111131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17960 + ... + 409053.

It is an arithmetic number, because the mean of its divisors is an integer number (5899198410).

Almost surely, 2^83501111111 is an apocalyptic number.

83501111111 is a deficient number, since it is larger than the sum of its proper divisors (10886063449).

83501111111 is a wasteful number, since it uses less digits than its factorization.

83501111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427666.

The product of its (nonzero) digits is 120, while the sum is 23.

Adding to 83501111111 its reverse (11111110538), we get a palindrome (94612221649).

The spelling of 83501111111 in words is "eighty-three billion, five hundred one million, one hundred eleven thousand, one hundred eleven".