15606051561605 has 16 divisors (see below), whose sum is σ = 18768012294528. Its totient is φ = 12457699320000.

The previous prime is 15606051561589. The next prime is 15606051561613. The reversal of 15606051561605 is 50616515060651.

It is not a de Polignac number, because 15606051561605 - 2⁴ = 15606051561589 is a prime.

It is a super-2 number, since 2×15606051561605² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15606051561605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3431330 + ... + 6556380.

It is an arithmetic number, because the mean of its divisors is an integer number (1173000768408).

Almost surely, 2^{15606051561605} is an apocalyptic number.

It is an amenable number.

15606051561605 is a deficient number, since it is larger than the sum of its proper divisors (3161960732923).

15606051561605 is a wasteful number, since it uses less digits than its factorization.

15606051561605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3127228.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 15606051561605 in words is "fifteen trillion, six hundred six billion, fifty-one million, five hundred sixty-one thousand, six hundred five".