83604425361 has 4 divisors (see below), whose sum is σ = 111472567152. Its totient is φ = 55736283572.

The previous prime is 83604425321. The next prime is 83604425371. The reversal of 83604425361 is 16352440638.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83604425361 - 2⁶ = 83604425297 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (83604425321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13934070891 + ... + 13934070896.

It is an arithmetic number, because the mean of its divisors is an integer number (27868141788).

Almost surely, 2^83604425361 is an apocalyptic number.

It is an amenable number.

83604425361 is a deficient number, since it is larger than the sum of its proper divisors (27868141791).

83604425361 is a wasteful number, since it uses less digits than its factorization.

83604425361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27868141790.

The product of its (nonzero) digits is 414720, while the sum is 42.

Adding to 83604425361 its reverse (16352440638), we get a palindrome (99956865999).

The spelling of 83604425361 in words is "eighty-three billion, six hundred four million, four hundred twenty-five thousand, three hundred sixty-one".