87068737069 has 2 divisors, whose sum is σ = 87068737070. Its totient is φ = 87068737068.

The previous prime is 87068737057. The next prime is 87068737079. The reversal of 87068737069 is 96073786078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81717083044 + 5351654025 = 285862^2 + 73155^2 .

It is a cyclic number.

It is not a de Polignac number, because 87068737069 - 2⁵ = 87068737037 is a prime.

It is a super-2 number, since 2×87068737069² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87068736998 and 87068737016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87068737009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43534368534 + 43534368535.

It is an arithmetic number, because the mean of its divisors is an integer number (43534368535).

Almost surely, 2^87068737069 is an apocalyptic number.

It is an amenable number.

87068737069 is a deficient number, since it is larger than the sum of its proper divisors (1).

87068737069 is an equidigital number, since it uses as much as digits as its factorization.

87068737069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 61.

The spelling of 87068737069 in words is "eighty-seven billion, sixty-eight million, seven hundred thirty-seven thousand, sixty-nine".