1061855984111 has 8 divisors (see below), whose sum is σ = 1167867793344. Its totient is φ = 959319972000.

The previous prime is 1061855984099. The next prime is 1061855984117. The reversal of 1061855984111 is 1114895581601.

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

It is not a de Polignac number, because 1061855984111 - 2⁶ = 1061855984047 is a prime.

It is a super-2 number, since 2×1061855984111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1061855984111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061855984117) 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, 868948640 + ... + 868949861.

It is an arithmetic number, because the mean of its divisors is an integer number (145983474168).

Almost surely, 2^{1061855984111} is an apocalyptic number.

1061855984111 is a deficient number, since it is larger than the sum of its proper divisors (106011809233).

1061855984111 is a wasteful number, since it uses less digits than its factorization.

1061855984111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737898561.

The product of its (nonzero) digits is 345600, while the sum is 50.

The spelling of 1061855984111 in words is "one trillion, sixty-one billion, eight hundred fifty-five million, nine hundred eighty-four thousand, one hundred eleven".