1566161016040 has 64 divisors (see below), whose sum is σ = 3709752336000. Its totient is φ = 593424817920.

The previous prime is 1566161016031. The next prime is 1566161016041. The reversal of 1566161016040 is 406101616651.

It is not an unprimeable number, because it can be changed into a prime (1566161016041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6809725 + ... + 7035955.

It is an arithmetic number, because the mean of its divisors is an integer number (57964880250).

Almost surely, 2^{1566161016040} is an apocalyptic number.

1566161016040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566161016040 is an abundant number, since it is smaller than the sum of its proper divisors (2143591319960).

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

1566161016040 is a wasteful number, since it uses less digits than its factorization.

1566161016040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235370 (or 235366 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 1566161016040 in words is "one trillion, five hundred sixty-six billion, one hundred sixty-one million, sixteen thousand, forty".