1011061051056 has 240 divisors, whose sum is σ = 3321180645120. Its totient is φ = 281165068800.

The previous prime is 1011061051043. The next prime is 1011061051067. The reversal of 1011061051056 is 6501501601101.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5922511 + ... + 6090833.

It is an arithmetic number, because the mean of its divisors is an integer number (13838252688).

Almost surely, 2^{1011061051056} is an apocalyptic number.

1011061051056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011061051056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1660590322560).

1011061051056 is an abundant number, since it is smaller than the sum of its proper divisors (2310119594064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1011061051056 is a wasteful number, since it uses less digits than its factorization.

1011061051056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168504 (or 168495 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

Adding to 1011061051056 its reverse (6501501601101), we get a palindrome (7512562652157).

The spelling of 1011061051056 in words is "one trillion, eleven billion, sixty-one million, fifty-one thousand, fifty-six".