161482785990 has 32 divisors (see below), whose sum is σ = 387571050720. Its totient is φ = 43060702464.

The previous prime is 161482785949. The next prime is 161482785991. The reversal of 161482785990 is 99587284161.

161482785990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161482785991) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1172476 + ... + 1302944.

It is an arithmetic number, because the mean of its divisors is an integer number (12111595335).

Almost surely, 2^161482785990 is an apocalyptic number.

161482785990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161482785990 is an abundant number, since it is smaller than the sum of its proper divisors (226088264730).

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

161482785990 is a wasteful number, since it uses less digits than its factorization.

161482785990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171736.

The product of its (nonzero) digits is 8709120, while the sum is 60.

The spelling of 161482785990 in words is "one hundred sixty-one billion, four hundred eighty-two million, seven hundred eighty-five thousand, nine hundred ninety".