16161392697066 has 24 divisors (see below), whose sum is σ = 35962738705764. Its totient is φ = 5241532766400.

The previous prime is 16161392697061. The next prime is 16161392697091. The reversal of 16161392697066 is 66079629316161.

16161392697066 is a `hidden beast` number, since 1 + 6 + 1 + 61 + 392 + 69 + 70 + 66 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13370204327841 + 2791188369225 = 3656529^2 + 1670685^2 .

It is a super-2 number, since 2×16161392697066² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16161392696994 and 16161392697012.

It is not an unprimeable number, because it can be changed into a prime (16161392697061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12133177035 + ... + 12133178366.

Almost surely, 2^{16161392697066} is an apocalyptic number.

16161392697066 is an abundant number, since it is smaller than the sum of its proper divisors (19801346008698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16161392697066 is a wasteful number, since it uses less digits than its factorization.

16161392697066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24266355446 (or 24266355443 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 16161392697066 in words is "sixteen trillion, one hundred sixty-one billion, three hundred ninety-two million, six hundred ninety-seven thousand, sixty-six".