68498405283 has 48 divisors (see below), whose sum is σ = 115844438528. Its totient is φ = 35237980800.

The previous prime is 68498405249. The next prime is 68498405291. The reversal of 68498405283 is 38250489486.

It is a happy number.

It is a Cunningham number, because it is equal to 261722²-1.

It is not a de Polignac number, because 68498405283 - 2¹³ = 68498397091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68498405233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130863 + ... + 392583.

Almost surely, 2^68498405283 is an apocalyptic number.

68498405283 is a deficient number, since it is larger than the sum of its proper divisors (47346033245).

68498405283 is a wasteful number, since it uses less digits than its factorization.

68498405283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261856 (or 261845 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 68498405283 in words is "sixty-eight billion, four hundred ninety-eight million, four hundred five thousand, two hundred eighty-three".