1540042275553 has 8 divisors (see below), whose sum is σ = 1545575181696. Its totient is φ = 1534513094400.

The previous prime is 1540042275503. The next prime is 1540042275587. The reversal of 1540042275553 is 3555722400451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540042275553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540042275503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101568 + ... + 1757953.

It is an arithmetic number, because the mean of its divisors is an integer number (193196897712).

Almost surely, 2^{1540042275553} is an apocalyptic number.

It is an amenable number.

1540042275553 is a deficient number, since it is larger than the sum of its proper divisors (5532906143).

1540042275553 is a wasteful number, since it uses less digits than its factorization.

1540042275553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862495.

The product of its (nonzero) digits is 840000, while the sum is 43.

The spelling of 1540042275553 in words is "one trillion, five hundred forty billion, forty-two million, two hundred seventy-five thousand, five hundred fifty-three".