161379069644 has 12 divisors (see below), whose sum is σ = 304137477504. Its totient is φ = 74482647504.

The previous prime is 161379069641. The next prime is 161379069661. The reversal of 161379069644 is 446960973161.

It is a happy number.

161379069644 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161379069644.

It is not an unprimeable number, because it can be changed into a prime (161379069641) 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 3 ways as a sum of consecutive naturals, for example, 1551721772 + ... + 1551721875.

It is an arithmetic number, because the mean of its divisors is an integer number (25344789792).

Almost surely, 2^161379069644 is an apocalyptic number.

It is an amenable number.

161379069644 is a deficient number, since it is larger than the sum of its proper divisors (142758407860).

161379069644 is a wasteful number, since it uses less digits than its factorization.

161379069644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103443664 (or 3103443662 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 161379069644 in words is "one hundred sixty-one billion, three hundred seventy-nine million, sixty-nine thousand, six hundred forty-four".