1606405610072 has 32 divisors (see below), whose sum is σ = 3171027787200. Its totient is φ = 760811277600.

The previous prime is 1606405610041. The next prime is 1606405610077. The reversal of 1606405610072 is 2700165046061.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606405610077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172547 + ... + 1800717.

It is an arithmetic number, because the mean of its divisors is an integer number (99094618350).

Almost surely, 2^{1606405610072} is an apocalyptic number.

It is an amenable number.

1606405610072 is a deficient number, since it is larger than the sum of its proper divisors (1564622177128).

1606405610072 is a wasteful number, since it uses less digits than its factorization.

1606405610072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634687 (or 1634683 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 1606405610072 in words is "one trillion, six hundred six billion, four hundred five million, six hundred ten thousand, seventy-two".