161606115056619 has 48 divisors (see below), whose sum is σ = 233961913785600. Its totient is φ = 107492780611008.

The previous prime is 161606115056587. The next prime is 161606115056623. The reversal of 161606115056619 is 916650511606161.

161606115056619 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 0 + 6 + 1 + 15 + 0 + 5 + 6 + 619 = 666.

It is not a de Polignac number, because 161606115056619 - 2⁵ = 161606115056587 is a prime.

It is a super-2 number, since 2×161606115056619² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161606115056689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33957996162 + ... + 33958000920.

It is an arithmetic number, because the mean of its divisors is an integer number (4874206537200).

Almost surely, 2^{161606115056619} is an apocalyptic number.

161606115056619 is a deficient number, since it is larger than the sum of its proper divisors (72355798728981).

161606115056619 is a wasteful number, since it uses less digits than its factorization.

161606115056619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9824 (or 9821 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 161606115056619 in words is "one hundred sixty-one trillion, six hundred six billion, one hundred fifteen million, fifty-six thousand, six hundred nineteen".