161146066240 has 28 divisors (see below), whose sum is σ = 383729070996. Its totient is φ = 64458426368.

The previous prime is 161146066177. The next prime is 161146066259. The reversal of 161146066240 is 42660641161.

It can be written as a sum of positive squares in 2 ways, for example, as 61381053504 + 99765012736 = 247752^2 + 315856^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161146066240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251790409 + ... + 251791048.

Almost surely, 2^161146066240 is an apocalyptic number.

161146066240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161146066240 is an abundant number, since it is smaller than the sum of its proper divisors (222583004756).

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

161146066240 is an equidigital number, since it uses as much as digits as its factorization.

161146066240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503581474 (or 503581464 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 161146066240 in words is "one hundred sixty-one billion, one hundred forty-six million, sixty-six thousand, two hundred forty".