52445665402 has 8 divisors (see below), whose sum is σ = 84719921076. Its totient is φ = 24205691712.

The previous prime is 52445665381. The next prime is 52445665451. The reversal of 52445665402 is 20456654425.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40731716041 + 11713949361 = 201821^2 + 108231^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008570463 + ... + 1008570514.

Almost surely, 2^52445665402 is an apocalyptic number.

52445665402 is a deficient number, since it is larger than the sum of its proper divisors (32274255674).

52445665402 is a wasteful number, since it uses less digits than its factorization.

52445665402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017140992.

The product of its (nonzero) digits is 1152000, while the sum is 43.

The spelling of 52445665402 in words is "fifty-two billion, four hundred forty-five million, six hundred sixty-five thousand, four hundred two".