87711622769 has 2 divisors, whose sum is σ = 87711622770. Its totient is φ = 87711622768.

The previous prime is 87711622729. The next prime is 87711622841. The reversal of 87711622769 is 96722611778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66196600369 + 21515022400 = 257287^2 + 146680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87711622769 is a prime.

It is a super-2 number, since 2×87711622769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87711622729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43855811384 + 43855811385.

It is an arithmetic number, because the mean of its divisors is an integer number (43855811385).

Almost surely, 2^87711622769 is an apocalyptic number.

It is an amenable number.

87711622769 is a deficient number, since it is larger than the sum of its proper divisors (1).

87711622769 is an equidigital number, since it uses as much as digits as its factorization.

87711622769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 56.

The spelling of 87711622769 in words is "eighty-seven billion, seven hundred eleven million, six hundred twenty-two thousand, seven hundred sixty-nine".