83777317470073 has 2 divisors, whose sum is σ = 83777317470074. Its totient is φ = 83777317470072.

The previous prime is 83777317470017. The next prime is 83777317470079. The reversal of 83777317470073 is 37007471377738.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43361329444624 + 40415988025449 = 6584932^2 + 6357357^2 .

It is a cyclic number.

It is not a de Polignac number, because 83777317470073 - 2³³ = 83768727535481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83777317469987 and 83777317470014.

It is not a weakly prime, because it can be changed into another prime (83777317470079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41888658735036 + 41888658735037.

It is an arithmetic number, because the mean of its divisors is an integer number (41888658735037).

Almost surely, 2^{83777317470073} is an apocalyptic number.

It is an amenable number.

83777317470073 is a deficient number, since it is larger than the sum of its proper divisors (1).

83777317470073 is an equidigital number, since it uses as much as digits as its factorization.

83777317470073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 101648736, while the sum is 64.

The spelling of 83777317470073 in words is "eighty-three trillion, seven hundred seventy-seven billion, three hundred seventeen million, four hundred seventy thousand, seventy-three".