161224666788 has 24 divisors (see below), whose sum is σ = 376378759008. Its totient is φ = 53714717056.

The previous prime is 161224666787. The next prime is 161224666831. The reversal of 161224666788 is 887666422161.

161224666788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161224666787) 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 7 ways as a sum of consecutive naturals, for example, 3329781 + ... + 3377852.

It is an arithmetic number, because the mean of its divisors is an integer number (15682448292).

Almost surely, 2^161224666788 is an apocalyptic number.

It is an amenable number.

161224666788 is an abundant number, since it is smaller than the sum of its proper divisors (215154092220).

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

161224666788 is a wasteful number, since it uses less digits than its factorization.

161224666788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6709643 (or 6709641 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The spelling of 161224666788 in words is "one hundred sixty-one billion, two hundred twenty-four million, six hundred sixty-six thousand, seven hundred eighty-eight".