1605721010060 has 96 divisors (see below), whose sum is σ = 3491364340800. Its totient is φ = 620025753600.

The previous prime is 1605721010041. The next prime is 1605721010077. The reversal of 1605721010060 is 600101275061.

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, 19685360 + ... + 19766760.

It is an arithmetic number, because the mean of its divisors is an integer number (36368378550).

Almost surely, 2^{1605721010060} is an apocalyptic number.

1605721010060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1605721010060 is an abundant number, since it is smaller than the sum of its proper divisors (1885643330740).

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

1605721010060 is a wasteful number, since it uses less digits than its factorization.

1605721010060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81771 (or 81769 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The spelling of 1605721010060 in words is "one trillion, six hundred five billion, seven hundred twenty-one million, ten thousand, sixty".