1645000242242 has 64 divisors (see below), whose sum is σ = 3020806656000. Its totient is φ = 656123732352.

The previous prime is 1645000242239. The next prime is 1645000242247. The reversal of 1645000242242 is 2422420005461.

It is a junction number, because it is equal to n+sod(n) for n = 1645000242199 and 1645000242208.

It is not an unprimeable number, because it can be changed into a prime (1645000242247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23301734 + ... + 23372222.

It is an arithmetic number, because the mean of its divisors is an integer number (47200104000).

Almost surely, 2^{1645000242242} is an apocalyptic number.

1645000242242 is a deficient number, since it is larger than the sum of its proper divisors (1375806413758).

1645000242242 is a wasteful number, since it uses less digits than its factorization.

1645000242242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72063.

The product of its (nonzero) digits is 30720, while the sum is 32.

The spelling of 1645000242242 in words is "one trillion, six hundred forty-five billion, two hundred forty-two thousand, two hundred forty-two".