161010250455240 has 96 divisors (see below), whose sum is σ = 523762074009720. Its totient is φ = 42896783913984.

The previous prime is 161010250455179. The next prime is 161010250455281. The reversal of 161010250455240 is 42554052010161.

161010250455240 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 10 + 2 + 50 + 4 + 552 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 161010061172676 + 189282564 = 12688974^2 + 13758^2 .

It is a super-2 number, since 2×161010250455240² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 161010250455195 and 161010250455204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 204204277 + ... + 204991236.

Almost surely, 2^{161010250455240} is an apocalyptic number.

161010250455240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161010250455240 is an abundant number, since it is smaller than the sum of its proper divisors (362751823554480).

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

161010250455240 is a wasteful number, since it uses less digits than its factorization.

161010250455240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409196623 (or 409196616 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 161010250455240 in words is "one hundred sixty-one trillion, ten billion, two hundred fifty million, four hundred fifty-five thousand, two hundred forty".