1617284324820 has 48 divisors (see below), whose sum is σ = 4549857738048. Its totient is φ = 429231855360.

The previous prime is 1617284324771. The next prime is 1617284324927. The reversal of 1617284324820 is 284234827161.

It is a self number, because there is not a number n which added to its sum of digits gives 1617284324820.

It is a congruent number.

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, 63861129 + ... + 63886448.

It is an arithmetic number, because the mean of its divisors is an integer number (94788702876).

Almost surely, 2^{1617284324820} is an apocalyptic number.

1617284324820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1617284324820 is an abundant number, since it is smaller than the sum of its proper divisors (2932573413228).

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

1617284324820 is a wasteful number, since it uses less digits than its factorization.

1617284324820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127747800 (or 127747798 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 1617284324820 in words is "one trillion, six hundred seventeen billion, two hundred eighty-four million, three hundred twenty-four thousand, eight hundred twenty".