870615208138226 has 24 divisors (see below), whose sum is σ = 1349440783376940. Its totient is φ = 421255274737440.

The previous prime is 870615208138217. The next prime is 870615208138231. The reversal of 870615208138226 is 622831802516078.

It can be written as a sum of positive squares in 2 ways, for example, as 836936278882201 + 33678929256025 = 28929851^2 + 5803355^2 .

It is a super-2 number, since 2×870615208138226² (a number of 31 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74652440 + ... + 85523196.

Almost surely, 2^{870615208138226} is an apocalyptic number.

870615208138226 is a deficient number, since it is larger than the sum of its proper divisors (478825575238714).

870615208138226 is a wasteful number, since it uses less digits than its factorization.

870615208138226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10912490 (or 10912459 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 870615208138226 in words is "eight hundred seventy trillion, six hundred fifteen billion, two hundred eight million, one hundred thirty-eight thousand, two hundred twenty-six".