53868552201689 has 4 divisors (see below), whose sum is σ = 53868809848500. Its totient is φ = 53868294554880.

The previous prime is 53868552201683. The next prime is 53868552201701. The reversal of 53868552201689 is 98610225586835.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48778113761689 + 5090438440000 = 6984133^2 + 2256200^2 .

It is a cyclic number.

It is not a de Polignac number, because 53868552201689 - 2²⁸ = 53868283766233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53868552201683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128509532 + ... + 128928029.

It is an arithmetic number, because the mean of its divisors is an integer number (13467202462125).

Almost surely, 2^{53868552201689} is an apocalyptic number.

It is an amenable number.

53868552201689 is a deficient number, since it is larger than the sum of its proper divisors (257646811).

53868552201689 is a wasteful number, since it uses less digits than its factorization.

53868552201689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257646810.

The product of its (nonzero) digits is 248832000, while the sum is 68.

The spelling of 53868552201689 in words is "fifty-three trillion, eight hundred sixty-eight billion, five hundred fifty-two million, two hundred one thousand, six hundred eighty-nine".