1220797169280 has 192 divisors, whose sum is σ = 4539839751720. Its totient is φ = 300503900160.

The previous prime is 1220797169237. The next prime is 1220797169297. The reversal of 1220797169280 is 829617970221.

1220797169280 is a `hidden beast` number, since 1 + 220 + 79 + 71 + 6 + 9 + 280 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 766661350464 + 454135818816 = 875592^2 + 673896^2 .

It is a tau number, because it is divible by the number of its divisors (192).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8076811 + ... + 8226570.

Almost surely, 2^{1220797169280} is an apocalyptic number.

1220797169280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220797169280 is an abundant number, since it is smaller than the sum of its proper divisors (3319042582440).

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

1220797169280 is a wasteful number, since it uses less digits than its factorization.

1220797169280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16303419 (or 16303404 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 1220797169280 in words is "one trillion, two hundred twenty billion, seven hundred ninety-seven million, one hundred sixty-nine thousand, two hundred eighty".