87534918269 has 2 divisors, whose sum is σ = 87534918270. Its totient is φ = 87534918268.

The previous prime is 87534918197. The next prime is 87534918319. The reversal of 87534918269 is 96281943578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64128978169 + 23405940100 = 253237^2 + 152990^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87534918269 is a prime.

It is a super-2 number, since 2×87534918269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87534918169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43767459134 + 43767459135.

It is an arithmetic number, because the mean of its divisors is an integer number (43767459135).

Almost surely, 2^87534918269 is an apocalyptic number.

It is an amenable number.

87534918269 is a deficient number, since it is larger than the sum of its proper divisors (1).

87534918269 is an equidigital number, since it uses as much as digits as its factorization.

87534918269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 62.

The spelling of 87534918269 in words is "eighty-seven billion, five hundred thirty-four million, nine hundred eighteen thousand, two hundred sixty-nine".