87765346969 has 2 divisors, whose sum is σ = 87765346970. Its totient is φ = 87765346968.

The previous prime is 87765346967. The next prime is 87765347009. The reversal of 87765346969 is 96964356778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54354259600 + 33411087369 = 233140^2 + 182787^2 .

It is a cyclic number.

It is not a de Polignac number, because 87765346969 - 2¹ = 87765346967 is a prime.

It is a super-2 number, since 2×87765346969² (a number of 23 digits) contains 22 as substring.

Together with 87765346967, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 87765346898 and 87765346907.

It is not a weakly prime, because it can be changed into another prime (87765346967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43882673484 + 43882673485.

It is an arithmetic number, because the mean of its divisors is an integer number (43882673485).

Almost surely, 2^87765346969 is an apocalyptic number.

It is an amenable number.

87765346969 is a deficient number, since it is larger than the sum of its proper divisors (1).

87765346969 is an equidigital number, since it uses as much as digits as its factorization.

87765346969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 411505920, while the sum is 70.

The spelling of 87765346969 in words is "eighty-seven billion, seven hundred sixty-five million, three hundred forty-six thousand, nine hundred sixty-nine".