83766099063509 has 2 divisors, whose sum is σ = 83766099063510. Its totient is φ = 83766099063508.

The previous prime is 83766099063467. The next prime is 83766099063527. The reversal of 83766099063509 is 90536099066738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80338057922500 + 3428041141009 = 8963150^2 + 1851497^2 .

It is a cyclic number.

It is not a de Polignac number, because 83766099063509 - 2⁸ = 83766099063253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83766099063539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41883049531754 + 41883049531755.

It is an arithmetic number, because the mean of its divisors is an integer number (41883049531755).

Almost surely, 2^{83766099063509} is an apocalyptic number.

It is an amenable number.

83766099063509 is a deficient number, since it is larger than the sum of its proper divisors (1).

83766099063509 is an equidigital number, since it uses as much as digits as its factorization.

83766099063509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396809280, while the sum is 71.

The spelling of 83766099063509 in words is "eighty-three trillion, seven hundred sixty-six billion, ninety-nine million, sixty-three thousand, five hundred nine".