1011243033040 has 80 divisors (see below), whose sum is σ = 2391109459200. Its totient is φ = 397628674560.

The previous prime is 1011243032939. The next prime is 1011243033067. The reversal of 1011243033040 is 403303421101.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1011243033040² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8230137 + ... + 8352103.

It is an arithmetic number, because the mean of its divisors is an integer number (29888868240).

Almost surely, 2^{1011243033040} is an apocalyptic number.

1011243033040 is a gapful number since it is divisible by the number (10) 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 1011243033040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195554729600).

1011243033040 is an abundant number, since it is smaller than the sum of its proper divisors (1379866426160).

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

1011243033040 is a wasteful number, since it uses less digits than its factorization.

1011243033040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123740 (or 123734 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1011243033040 its reverse (403303421101), we get a palindrome (1414546454141).

The spelling of 1011243033040 in words is "one trillion, eleven billion, two hundred forty-three million, thirty-three thousand, forty".