87163705226 has 16 divisors (see below), whose sum is σ = 149085433224. Its totient is φ = 37862966784.

The previous prime is 87163705177. The next prime is 87163705241. The reversal of 87163705226 is 62250736178.

It is a Cunningham number, because it is equal to 295235²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 86376622201 + 787083025 = 293899^2 + 28055^2 .

It is a super-2 number, since 2×87163705226² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98601035 + ... + 98601918.

Almost surely, 2^87163705226 is an apocalyptic number.

87163705226 is a deficient number, since it is larger than the sum of its proper divisors (61921727998).

87163705226 is a wasteful number, since it uses less digits than its factorization.

87163705226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197202985.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 87163705226 in words is "eighty-seven billion, one hundred sixty-three million, seven hundred five thousand, two hundred twenty-six".