387642474553 has 2 divisors, whose sum is σ = 387642474554. Its totient is φ = 387642474552.

The previous prime is 387642474533. The next prime is 387642474629. The reversal of 387642474553 is 355474246783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 383790162064 + 3852312489 = 619508^2 + 62067^2 .

It is an emirp because it is prime and its reverse (355474246783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387642474553 - 2⁵ = 387642474521 is a prime.

It is not a weakly prime, because it can be changed into another prime (387642474533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193821237276 + 193821237277.

It is an arithmetic number, because the mean of its divisors is an integer number (193821237277).

Almost surely, 2^387642474553 is an apocalyptic number.

It is an amenable number.

387642474553 is a deficient number, since it is larger than the sum of its proper divisors (1).

387642474553 is an equidigital number, since it uses as much as digits as its factorization.

387642474553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67737600, while the sum is 58.

The spelling of 387642474553 in words is "three hundred eighty-seven billion, six hundred forty-two million, four hundred seventy-four thousand, five hundred fifty-three".