161259463395216 has 30 divisors (see below), whose sum is σ = 451302526030070. Its totient is φ = 53753154465024.

The previous prime is 161259463395193. The next prime is 161259463395227. The reversal of 161259463395216 is 612593364952161.

It is a happy number.

161259463395216 is a `hidden beast` number, since 1 + 6 + 1 + 2 + 594 + 6 + 3 + 39 + 5 + 2 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 148969250447616 + 12290212947600 = 12205296^2 + 3505740^2 .

It is a super-2 number, since 2×161259463395216² (a number of 29 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 559928692201 + ... + 559928692488.

Almost surely, 2^{161259463395216} is an apocalyptic number.

161259463395216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

161259463395216 is an abundant number, since it is smaller than the sum of its proper divisors (290043062634854).

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

161259463395216 is a wasteful number, since it uses less digits than its factorization.

161259463395216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119857384703 (or 1119857384694 counting only the distinct ones).

The product of its digits is 62985600, while the sum is 63.

The spelling of 161259463395216 in words is "one hundred sixty-one trillion, two hundred fifty-nine billion, four hundred sixty-three million, three hundred ninety-five thousand, two hundred sixteen".