1617786324642 has 16 divisors (see below), whose sum is σ = 3376249721280. Its totient is φ = 515815929552.

The previous prime is 1617786324607. The next prime is 1617786324779. The reversal of 1617786324642 is 2464236877161.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5861544517 + ... + 5861544792.

It is an arithmetic number, because the mean of its divisors is an integer number (211015607580).

Almost surely, 2^{1617786324642} is an apocalyptic number.

1617786324642 is an abundant number, since it is smaller than the sum of its proper divisors (1758463396638).

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

1617786324642 is a wasteful number, since it uses less digits than its factorization.

1617786324642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11723089337.

The product of its digits is 16257024, while the sum is 57.

The spelling of 1617786324642 in words is "one trillion, six hundred seventeen billion, seven hundred eighty-six million, three hundred twenty-four thousand, six hundred forty-two".