1615168615161 has 32 divisors (see below), whose sum is σ = 2172744188928. Its totient is φ = 1067237847360.

The previous prime is 1615168615141. The next prime is 1615168615171.

1615168615161 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1615168615161 - 2¹⁴ = 1615168598777 is a prime.

It is a super-2 number, since 2×1615168615161² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1615168615161.

It is not an unprimeable number, because it can be changed into a prime (1615168615111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177662226 + ... + 177671316.

It is an arithmetic number, because the mean of its divisors is an integer number (67898255904).

Almost surely, 2^{1615168615161} is an apocalyptic number.

It is an amenable number.

1615168615161 is a deficient number, since it is larger than the sum of its proper divisors (557575573767).

1615168615161 is a wasteful number, since it uses less digits than its factorization.

1615168615161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10461.

The product of its digits is 259200, while the sum is 48.

The spelling of 1615168615161 in words is "one trillion, six hundred fifteen billion, one hundred sixty-eight million, six hundred fifteen thousand, one hundred sixty-one".