161606000085651 has 24 divisors (see below), whose sum is σ = 254653158998784. Its totient is φ = 97942538018160.

The previous prime is 161606000085583. The next prime is 161606000085671. The reversal of 161606000085651 is 156580000606161.

161606000085651 is a `hidden beast` number, since 16 + 16 + 0 + 60 + 0 + 0 + 0 + 8 + 565 + 1 = 666.

161606000085651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161606000085651 - 2¹¹ = 161606000083603 is a prime.

It is a super-2 number, since 2×161606000085651² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161606000085597 and 161606000085606.

It is not an unprimeable number, because it can be changed into a prime (161606000085671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16195890 + ... + 24197496.

It is an arithmetic number, because the mean of its divisors is an integer number (10610548291616).

Almost surely, 2^{161606000085651} is an apocalyptic number.

161606000085651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

161606000085651 is a deficient number, since it is larger than the sum of its proper divisors (93047158913133).

161606000085651 is a wasteful number, since it uses less digits than its factorization.

161606000085651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8205631 (or 8205628 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 161606000085651 in words is "one hundred sixty-one trillion, six hundred six billion, eighty-five thousand, six hundred fifty-one".