1566320460540 has 96 divisors (see below), whose sum is σ = 4913705147904. Its totient is φ = 369451503360.

The previous prime is 1566320460517. The next prime is 1566320460581. The reversal of 1566320460540 is 450640236651.

It is a junction number, because it is equal to n+sod(n) for n = 1566320460492 and 1566320460501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32046024 + ... + 32094863.

It is an arithmetic number, because the mean of its divisors is an integer number (51184428624).

Almost surely, 2^{1566320460540} is an apocalyptic number.

1566320460540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566320460540 is an abundant number, since it is smaller than the sum of its proper divisors (3347384687364).

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

1566320460540 is a wasteful number, since it uses less digits than its factorization.

1566320460540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64140947 (or 64140945 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 1566320460540 in words is "one trillion, five hundred sixty-six billion, three hundred twenty million, four hundred sixty thousand, five hundred forty".