1001581456606 has 16 divisors (see below), whose sum is σ = 1502958256128. Its totient is φ = 500595420600.

The previous prime is 1001581456549. The next prime is 1001581456643. The reversal of 1001581456606 is 6066541851001.

It is a super-2 number, since 2×1001581456606² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87675411 + ... + 87686833.

It is an arithmetic number, because the mean of its divisors is an integer number (93934891008).

Almost surely, 2^{1001581456606} is an apocalyptic number.

1001581456606 is a deficient number, since it is larger than the sum of its proper divisors (501376799522).

1001581456606 is a wasteful number, since it uses less digits than its factorization.

1001581456606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24687.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 1001581456606 in words is "one trillion, one billion, five hundred eighty-one million, four hundred fifty-six thousand, six hundred six".