1540543113440 has 24 divisors (see below), whose sum is σ = 3639533105880. Its totient is φ = 616217245312.

The previous prime is 1540543113391. The next prime is 1540543113463. The reversal of 1540543113440 is 443113450451.

It is a self number, because there is not a number n which added to its sum of digits gives 1540543113440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4814197070 + ... + 4814197389.

It is an arithmetic number, because the mean of its divisors is an integer number (151647212745).

Almost surely, 2^{1540543113440} is an apocalyptic number.

1540543113440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540543113440 is an abundant number, since it is smaller than the sum of its proper divisors (2098989992440).

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

1540543113440 is an equidigital number, since it uses as much as digits as its factorization.

1540543113440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9628394474 (or 9628394466 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 1540543113440 its reverse (443113450451), we get a palindrome (1983656563891).

The spelling of 1540543113440 in words is "one trillion, five hundred forty billion, five hundred forty-three million, one hundred thirteen thousand, four hundred forty".