1540424431144 has 16 divisors (see below), whose sum is σ = 3058195562100. Its totient is φ = 724905614592.

The previous prime is 1540424431129. The next prime is 1540424431151. The reversal of 1540424431144 is 4411344240451.

It can be written as a sum of positive squares in 2 ways, for example, as 1238212562500 + 302211868644 = 1112750^2 + 549738^2 .

It is a super-3 number, since 3×1540424431144³ (a number of 38 digits) contains 333 as substring.

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, 5663324979 + ... + 5663325250.

Almost surely, 2^{1540424431144} is an apocalyptic number.

It is an amenable number.

1540424431144 is a deficient number, since it is larger than the sum of its proper divisors (1517771130956).

1540424431144 is a wasteful number, since it uses less digits than its factorization.

1540424431144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11326650252 (or 11326650248 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 37.

Adding to 1540424431144 its reverse (4411344240451), we get a palindrome (5951768671595).

The spelling of 1540424431144 in words is "one trillion, five hundred forty billion, four hundred twenty-four million, four hundred thirty-one thousand, one hundred forty-four".