1544404140340 has 12 divisors (see below), whose sum is σ = 3243248694756. Its totient is φ = 617761656128.

The previous prime is 1544404140337. The next prime is 1544404140397. The reversal of 1544404140340 is 430414044451.

It can be written as a sum of positive squares in 2 ways, for example, as 977464414224 + 566939726116 = 988668^2 + 752954^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1544404140296 and 1544404140305.

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, 38610103489 + ... + 38610103528.

It is an arithmetic number, because the mean of its divisors is an integer number (270270724563).

Almost surely, 2^{1544404140340} is an apocalyptic number.

1544404140340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1544404140340 is an abundant number, since it is smaller than the sum of its proper divisors (1698844554416).

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

1544404140340 is a wasteful number, since it uses less digits than its factorization.

1544404140340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77220207026 (or 77220207024 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

Adding to 1544404140340 its reverse (430414044451), we get a palindrome (1974818184791).

The spelling of 1544404140340 in words is "one trillion, five hundred forty-four billion, four hundred four million, one hundred forty thousand, three hundred forty".