1566270081623 has 16 divisors (see below), whose sum is σ = 1793298709440. Its totient is φ = 1356834445824.

The previous prime is 1566270081613. The next prime is 1566270081647. The reversal of 1566270081623 is 3261800726651.

It is not a de Polignac number, because 1566270081623 - 2⁶ = 1566270081559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566270081613) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 49402658 + ... + 49434351.

It is an arithmetic number, because the mean of its divisors is an integer number (112081169340).

Almost surely, 2^{1566270081623} is an apocalyptic number.

1566270081623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1566270081623 is a deficient number, since it is larger than the sum of its proper divisors (227028627817).

1566270081623 is a wasteful number, since it uses less digits than its factorization.

1566270081623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98837098.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 1566270081623 in words is "one trillion, five hundred sixty-six billion, two hundred seventy million, eighty-one thousand, six hundred twenty-three".