1620665221314 has 8 divisors (see below), whose sum is σ = 3241330442640. Its totient is φ = 540221740436.

The previous prime is 1620665221313. The next prime is 1620665221397. The reversal of 1620665221314 is 4131225660261.

It is a sphenic number, since it is the product of 3 distinct primes.

1620665221314 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1620665221313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135055435104 + ... + 135055435115.

It is an arithmetic number, because the mean of its divisors is an integer number (405166305330).

Almost surely, 2^{1620665221314} is an apocalyptic number.

1620665221314 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1620665221314 is a wasteful number, since it uses less digits than its factorization.

1620665221314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270110870224.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 1620665221314 in words is "one trillion, six hundred twenty billion, six hundred sixty-five million, two hundred twenty-one thousand, three hundred fourteen".