1565741856428 has 12 divisors (see below), whose sum is σ = 2773060878840. Its totient is φ = 773438748192.

The previous prime is 1565741856409. The next prime is 1565741856439. The reversal of 1565741856428 is 8246581475651.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2358044633 + ... + 2358045296.

It is an arithmetic number, because the mean of its divisors is an integer number (231088406570).

Almost surely, 2^{1565741856428} is an apocalyptic number.

It is an amenable number.

1565741856428 is a deficient number, since it is larger than the sum of its proper divisors (1207319022412).

1565741856428 is a wasteful number, since it uses less digits than its factorization.

1565741856428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716090016 (or 4716090014 counting only the distinct ones).

The product of its digits is 64512000, while the sum is 62.

The spelling of 1565741856428 in words is "one trillion, five hundred sixty-five billion, seven hundred forty-one million, eight hundred fifty-six thousand, four hundred twenty-eight".