1669397420160 has 128 divisors (see below), whose sum is σ = 5912449257600. Its totient is φ = 445172640768.

The previous prime is 1669397420123. The next prime is 1669397420177. The reversal of 1669397420160 is 610247939661.

1669397420160 is a `hidden beast` number, since 16 + 69 + 3 + 97 + 420 + 1 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1669397420097 and 1669397420106.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48287044 + ... + 48321603.

It is an arithmetic number, because the mean of its divisors is an integer number (46191009825).

Almost surely, 2^{1669397420160} is an apocalyptic number.

1669397420160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1669397420160 is an abundant number, since it is smaller than the sum of its proper divisors (4243051837440).

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

1669397420160 is an equidigital number, since it uses as much as digits as its factorization.

1669397420160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96608675 (or 96608657 counting only the distinct ones).

The product of its (nonzero) digits is 2939328, while the sum is 54.

The spelling of 1669397420160 in words is "one trillion, six hundred sixty-nine billion, three hundred ninety-seven million, four hundred twenty thousand, one hundred sixty".