1565100166660 has 48 divisors (see below), whose sum is σ = 3335981644800. Its totient is φ = 616656268800.

The previous prime is 1565100166633. The next prime is 1565100166661. The reversal of 1565100166660 is 666610015651.

It is not an unprimeable number, because it can be changed into a prime (1565100166661) 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, 28982685 + ... + 29036635.

It is an arithmetic number, because the mean of its divisors is an integer number (69499617600).

Almost surely, 2^{1565100166660} is an apocalyptic number.

1565100166660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1565100166660 is an abundant number, since it is smaller than the sum of its proper divisors (1770881478140).

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

1565100166660 is a wasteful number, since it uses less digits than its factorization.

1565100166660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75676 (or 75674 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 43.

The spelling of 1565100166660 in words is "one trillion, five hundred sixty-five billion, one hundred million, one hundred sixty-six thousand, six hundred sixty".