1566165126140 has 24 divisors (see below), whose sum is σ = 3289499500560. Its totient is φ = 626360767488.

The previous prime is 1566165126131. The next prime is 1566165126143. The reversal of 1566165126140 is 416215616651.

It is a super-2 number, since 2×1566165126140² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1566165126091 and 1566165126100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566165126143) 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, 6458150 + ... + 6696269.

It is an arithmetic number, because the mean of its divisors is an integer number (137062479190).

Almost surely, 2^{1566165126140} is an apocalyptic number.

1566165126140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566165126140 is an abundant number, since it is smaller than the sum of its proper divisors (1723334374420).

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

1566165126140 is a wasteful number, since it uses less digits than its factorization.

1566165126140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160381 (or 13160379 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The spelling of 1566165126140 in words is "one trillion, five hundred sixty-six billion, one hundred sixty-five million, one hundred twenty-six thousand, one hundred forty".