83560551857 has 2 divisors, whose sum is σ = 83560551858. Its totient is φ = 83560551856.

The previous prime is 83560551853. The next prime is 83560551913. The reversal of 83560551857 is 75815506538.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67039048561 + 16521503296 = 258919^2 + 128536^2 .

It is a cyclic number.

It is not a de Polignac number, because 83560551857 - 2² = 83560551853 is a prime.

It is a super-2 number, since 2×83560551857² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83560551799 and 83560551808.

It is not a weakly prime, because it can be changed into another prime (83560551853) 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 as a sum of consecutive naturals, namely, 41780275928 + 41780275929.

It is an arithmetic number, because the mean of its divisors is an integer number (41780275929).

Almost surely, 2^83560551857 is an apocalyptic number.

It is an amenable number.

83560551857 is a deficient number, since it is larger than the sum of its proper divisors (1).

83560551857 is an equidigital number, since it uses as much as digits as its factorization.

83560551857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040000, while the sum is 53.

The spelling of 83560551857 in words is "eighty-three billion, five hundred sixty million, five hundred fifty-one thousand, eight hundred fifty-seven".