1617161145216 has 64 divisors (see below), whose sum is σ = 4296083976720. Its totient is φ = 538991009792.

The previous prime is 1617161145169. The next prime is 1617161145221. The reversal of 1617161145216 is 6125411617161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 3120586 + ... + 3601718.

Almost surely, 2^{1617161145216} is an apocalyptic number.

1617161145216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1617161145216 is an abundant number, since it is smaller than the sum of its proper divisors (2678922831504).

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

1617161145216 is an equidigital number, since it uses as much as digits as its factorization.

1617161145216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489903 (or 489891 counting only the distinct ones).

The product of its digits is 60480, while the sum is 42.

The spelling of 1617161145216 in words is "one trillion, six hundred seventeen billion, one hundred sixty-one million, one hundred forty-five thousand, two hundred sixteen".