1011133020440 has 32 divisors (see below), whose sum is σ = 2323454604480. Its totient is φ = 395847820032.

The previous prime is 1011133020419. The next prime is 1011133020463. The reversal of 1011133020440 is 440203311101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268916477 + ... + 268920236.

It is an arithmetic number, because the mean of its divisors is an integer number (72607956390).

Almost surely, 2^{1011133020440} is an apocalyptic number.

1011133020440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011133020440 is an abundant number, since it is smaller than the sum of its proper divisors (1312321584040).

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

1011133020440 is a wasteful number, since it uses less digits than its factorization.

1011133020440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537836771 (or 537836767 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1011133020440 its reverse (440203311101), we get a palindrome (1451336331541).

The spelling of 1011133020440 in words is "one trillion, eleven billion, one hundred thirty-three million, twenty thousand, four hundred forty".