1645600244542 has 16 divisors (see below), whose sum is σ = 2470091213520. Its totient is φ = 822236694912.

The previous prime is 1645600244531. The next prime is 1645600244557. The reversal of 1645600244542 is 2454420065461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18700198 + ... + 18787990.

It is an arithmetic number, because the mean of its divisors is an integer number (154380700845).

Almost surely, 2^{1645600244542} is an apocalyptic number.

1645600244542 is a deficient number, since it is larger than the sum of its proper divisors (824490968978).

1645600244542 is a wasteful number, since it uses less digits than its factorization.

1645600244542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94107.

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 1645600244542 in words is "one trillion, six hundred forty-five billion, six hundred million, two hundred forty-four thousand, five hundred forty-two".