1040535554544 has 160 divisors (see below), whose sum is σ = 3053234580480. Its totient is φ = 339135552000.

The previous prime is 1040535554533. The next prime is 1040535554563. The reversal of 1040535554544 is 4454555350401.

1040535554544 is a `hidden beast` number, since 1 + 0 + 4 + 0 + 5 + 3 + 55 + 54 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1040535554544.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21315124 + ... + 21363884.

It is an arithmetic number, because the mean of its divisors is an integer number (19082716128).

Almost surely, 2^{1040535554544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1040535554544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526617290240).

1040535554544 is an abundant number, since it is smaller than the sum of its proper divisors (2012699025936).

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

1040535554544 is a wasteful number, since it uses less digits than its factorization.

1040535554544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49876 (or 49864 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 45.

The spelling of 1040535554544 in words is "one trillion, forty billion, five hundred thirty-five million, five hundred fifty-four thousand, five hundred forty-four".