161448222516680 has 32 divisors (see below), whose sum is σ = 396282000723840. Its totient is φ = 58708444551360.

The previous prime is 161448222516619. The next prime is 161448222516683. The reversal of 161448222516680 is 86615222844161.

It is not an unprimeable number, because it can be changed into a prime (161448222516683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183463888784 + ... + 183463889663.

It is an arithmetic number, because the mean of its divisors is an integer number (12383812522620).

Almost surely, 2^{161448222516680} is an apocalyptic number.

161448222516680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161448222516680 is an abundant number, since it is smaller than the sum of its proper divisors (234833778207160).

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

161448222516680 is a wasteful number, since it uses less digits than its factorization.

161448222516680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366927778469 (or 366927778465 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 161448222516680 in words is "one hundred sixty-one trillion, four hundred forty-eight billion, two hundred twenty-two million, five hundred sixteen thousand, six hundred eighty".