28161401480208 has 60 divisors (see below), whose sum is σ = 78928203472560. Its totient is φ = 9373389820608.

The previous prime is 28161401480143. The next prime is 28161401480213. The reversal of 28161401480208 is 80208410416182.

28161401480208 is a `hidden beast` number, since 2 + 8 + 1 + 6 + 140 + 1 + 480 + 20 + 8 = 666.

It is a super-2 number, since 2×28161401480208² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143068038 + ... + 143264741.

It is an arithmetic number, because the mean of its divisors is an integer number (1315470057876).

Almost surely, 2^{28161401480208} is an apocalyptic number.

It is an amenable number.

28161401480208 is an abundant number, since it is smaller than the sum of its proper divisors (50766801992352).

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

28161401480208 is a wasteful number, since it uses less digits than its factorization.

28161401480208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286333476 (or 286333467 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The spelling of 28161401480208 in words is "twenty-eight trillion, one hundred sixty-one billion, four hundred one million, four hundred eighty thousand, two hundred eight".