1606405640136 has 64 divisors (see below), whose sum is σ = 4426272406080. Its totient is φ = 481771130880.

The previous prime is 1606405640131. The next prime is 1606405640197. The reversal of 1606405640136 is 6310465046061.

It is not an unprimeable number, because it can be changed into a prime (1606405640131) 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, 31339701 + ... + 31390916.

It is an arithmetic number, because the mean of its divisors is an integer number (69160506345).

Almost surely, 2^{1606405640136} is an apocalyptic number.

It is an amenable number.

1606405640136 is an abundant number, since it is smaller than the sum of its proper divisors (2819866765944).

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

1606405640136 is a wasteful number, since it uses less digits than its factorization.

1606405640136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62730734 (or 62730730 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 1606405640136 in words is "one trillion, six hundred six billion, four hundred five million, six hundred forty thousand, one hundred thirty-six".