16345548161220 has 24 divisors (see below), whose sum is σ = 45767534851584. Its totient is φ = 4358812842976.

The previous prime is 16345548161191. The next prime is 16345548161263. The reversal of 16345548161220 is 2216184554361.

It is a super-2 number, since 2×16345548161220² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16345548161220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136212901284 + ... + 136212901403.

It is an arithmetic number, because the mean of its divisors is an integer number (1906980618816).

Almost surely, 2^{16345548161220} is an apocalyptic number.

16345548161220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16345548161220 is an abundant number, since it is smaller than the sum of its proper divisors (29421986690364).

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

16345548161220 is a wasteful number, since it uses less digits than its factorization.

16345548161220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272425802699 (or 272425802697 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 16345548161220 in words is "sixteen trillion, three hundred forty-five billion, five hundred forty-eight million, one hundred sixty-one thousand, two hundred twenty".